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12002022031 = 3116321111257
BaseRepresentation
bin10110010110110000…
…00101001010001111
31010222102220220001111
423023120011022033
5144040004201111
65302540552451
7603264334606
oct131330051217
933872826044
1012002022031
1150a991287a
1223ab552727
1311936c1cac
1481bdc6a3d
154a3a1ea21
hex2cb60528f

12002022031 has 16 divisors (see below), whose sum is σ = 12525380608. Its totient is φ = 11487873600.

The previous prime is 12002022029. The next prime is 12002022061. The reversal of 12002022031 is 13022020021.

It is a cyclic number.

It is not a de Polignac number, because 12002022031 - 21 = 12002022029 is a prime.

It is a super-2 number, since 2×120020220312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002022061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1060555 + ... + 1071811.

It is an arithmetic number, because the mean of its divisors is an integer number (782836288).

Almost surely, 212002022031 is an apocalyptic number.

12002022031 is a deficient number, since it is larger than the sum of its proper divisors (523358577).

12002022031 is a wasteful number, since it uses less digits than its factorization.

12002022031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11662.

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

Adding to 12002022031 its reverse (13022020021), we get a palindrome (25024042052).

The spelling of 12002022031 in words is "twelve billion, two million, twenty-two thousand, thirty-one".

Divisors: 1 31 163 211 5053 6541 11257 34393 348967 1066183 1834891 2375227 56881621 73632037 387162001 12002022031