201021122012 has 24 divisors (see below), whose sum is σ = 365950645200. Its totient is φ = 96502520576.

The previous prime is 201021121879. The next prime is 201021122023. The reversal of 201021122012 is 210221120102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4819853 + ... + 4861380.

It is an arithmetic number, because the mean of its divisors is an integer number (15247943550).

Almost surely, 2^201021122012 is an apocalyptic number.

It is an amenable number.

201021122012 is a deficient number, since it is larger than the sum of its proper divisors (164929523188).

201021122012 is a wasteful number, since it uses less digits than its factorization.

201021122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9681445 (or 9681443 counting only the distinct ones).

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

Adding to 201021122012 its reverse (210221120102), we get a palindrome (411242242114).

The spelling of 201021122012 in words is "two hundred one billion, twenty-one million, one hundred twenty-two thousand, twelve".