201121332021012 has 96 divisors (see below), whose sum is σ = 537305024325888. Its totient is φ = 58076053161984.

The previous prime is 201121332020977. The next prime is 201121332021089. The reversal of 201121332021012 is 210120233121102.

It is a super-2 number, since 2×201121332021012² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201121332021012.

It is a congruent number.

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, 528620053 + ... + 529000380.

It is an arithmetic number, because the mean of its divisors is an integer number (5596927336728).

Almost surely, 2^{201121332021012} is an apocalyptic number.

It is an amenable number.

201121332021012 is an abundant number, since it is smaller than the sum of its proper divisors (336183692304876).

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

201121332021012 is a wasteful number, since it uses less digits than its factorization.

201121332021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057620529 (or 1057620527 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 201121332021012 its reverse (210120233121102), we get a palindrome (411241565142114).

The spelling of 201121332021012 in words is "two hundred one trillion, one hundred twenty-one billion, three hundred thirty-two million, twenty-one thousand, twelve".