12021311011000 has 64 divisors (see below), whose sum is σ = 28131336398880. Its totient is φ = 4808273356800.

The previous prime is 12021311010893. The next prime is 12021311011033. The reversal of 12021311011000 is 11011312021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19473079 + ... + 20080921.

Almost surely, 2^{12021311011000} is an apocalyptic number.

12021311011000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021311011000 is an abundant number, since it is smaller than the sum of its proper divisors (16110025387880).

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

12021311011000 is a wasteful number, since it uses less digits than its factorization.

12021311011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627641 (or 627627 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12021311011000 its reverse (11011312021), we get a palindrome (12032322323021).

The spelling of 12021311011000 in words is "twelve trillion, twenty-one billion, three hundred eleven million, eleven thousand".