12121022021000 has 32 divisors (see below), whose sum is σ = 28363191531480. Its totient is φ = 4848408808000.

The previous prime is 12121022020981. The next prime is 12121022021111. The reversal of 12121022021000 is 12022012121.

It can be written as a sum of positive squares in 4 ways, for example, as 3081871536676 + 9039150484324 = 1755526^2 + 3006518^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6060510011 + ... + 6060512010.

Almost surely, 2^{12121022021000} is an apocalyptic number.

12121022021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121022021000 is an abundant number, since it is smaller than the sum of its proper divisors (16242169510480).

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

12121022021000 is a wasteful number, since it uses less digits than its factorization.

12121022021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12121022042 (or 12121022028 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12121022021000 its reverse (12022012121), we get a palindrome (12133044033121).

The spelling of 12121022021000 in words is "twelve trillion, one hundred twenty-one billion, twenty-two million, twenty-one thousand".