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12231021000 = 2335311973821
BaseRepresentation
bin10110110010000011…
…01001000111001000
31011120101211020120210
423121001221013020
5200022120133000
65341401121120
7612044651232
oct133101510710
934511736523
1012231021000
115207102120
1224541891a0
1311cbc90743
14840597252
154b8ba6350
hex2d90691c8

12231021000 has 256 divisors, whose sum is σ = 42070129920. Its totient is φ = 2933760000.

The previous prime is 12231020981. The next prime is 12231021013. The reversal of 12231021000 is 12013221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3199090 + ... + 3202910.

It is an arithmetic number, because the mean of its divisors is an integer number (164336445).

Almost surely, 212231021000 is an apocalyptic number.

12231021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12231021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21035064960).

12231021000 is an abundant number, since it is smaller than the sum of its proper divisors (29839108920).

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

12231021000 is a wasteful number, since it uses less digits than its factorization.

12231021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953 (or 3939 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12231021000 its reverse (12013221), we get a palindrome (12243034221).

The spelling of 12231021000 in words is "twelve billion, two hundred thirty-one million, twenty-one thousand".