12111010021000 has 128 divisors (see below), whose sum is σ = 31141774460160. Its totient is φ = 4371857088000.

The previous prime is 12111010020979. The next prime is 12111010021021. The reversal of 12111010021000 is 12001011121.

It is an interprime number because it is at equal distance from previous prime (12111010020979) and next prime (12111010021021).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2511252 + ... + 5525251.

It is an arithmetic number, because the mean of its divisors is an integer number (243295112970).

Almost surely, 2^{12111010021000} is an apocalyptic number.

12111010021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111010021000 is an abundant number, since it is smaller than the sum of its proper divisors (19030764439160).

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

12111010021000 is a wasteful number, since it uses less digits than its factorization.

12111010021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8036672 (or 8036658 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12111010021000 its reverse (12001011121), we get a palindrome (12123011032121).

The spelling of 12111010021000 in words is "twelve trillion, one hundred eleven billion, ten million, twenty-one thousand".