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12102213040 = 2451259120157
BaseRepresentation
bin10110100010101100…
…10001110110110000
31011020102110010021121
423101112101312300
5144241131304130
65320520232024
7605622053641
oct132126216660
934212403247
1012102213040
115150424865
12241900b614
1311ab3a1708
1482b4276c8
154ac710d7a
hex2d1591db0

12102213040 has 40 divisors (see below), whose sum is σ = 28160228880. Its totient is φ = 4836999936.

The previous prime is 12102212999. The next prime is 12102213041. The reversal of 12102213040 is 4031220121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (12102213041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40642 + ... + 160798.

It is an arithmetic number, because the mean of its divisors is an integer number (704005722).

Almost surely, 212102213040 is an apocalyptic number.

12102213040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102213040 is an abundant number, since it is smaller than the sum of its proper divisors (16058015840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12102213040 is a wasteful number, since it uses less digits than its factorization.

12102213040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121429 (or 121423 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12102213040 its reverse (4031220121), we get a palindrome (16133433161).

The spelling of 12102213040 in words is "twelve billion, one hundred two million, two hundred thirteen thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1259 2518 5036 6295 10072 12590 20144 25180 50360 100720 120157 240314 480628 600785 961256 1201570 1922512 2403140 4806280 9612560 151277663 302555326 605110652 756388315 1210221304 1512776630 2420442608 3025553260 6051106520 12102213040