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12102230020 = 2254311403971
BaseRepresentation
bin10110100010101100…
…10110000000000100
31011020102110222120111
423101112112000010
5144241132330040
65320520442404
7605622154306
oct132126260004
934212428514
1012102230020
1151504365a1
122419019404
1311ab3a936a
1482b42d976
154ac715dea
hex2d1596004

12102230020 has 24 divisors (see below), whose sum is σ = 25473667968. Its totient is φ = 4829656800.

The previous prime is 12102230003. The next prime is 12102230071. The reversal of 12102230020 is 2003220121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693366 + ... + 710605.

It is an arithmetic number, because the mean of its divisors is an integer number (1061402832).

Almost surely, 212102230020 is an apocalyptic number.

12102230020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102230020 is an abundant number, since it is smaller than the sum of its proper divisors (13371437948).

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

12102230020 is a wasteful number, since it uses less digits than its factorization.

12102230020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404411 (or 1404409 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 12102230020 its reverse (2003220121), we get a palindrome (14105450141).

The spelling of 12102230020 in words is "twelve billion, one hundred two million, two hundred thirty thousand, twenty".

Divisors: 1 2 4 5 10 20 431 862 1724 2155 4310 8620 1403971 2807942 5615884 7019855 14039710 28079420 605111501 1210223002 2420446004 3025557505 6051115010 12102230020