201021222121112 has 128 divisors (see below), whose sum is σ = 384286117985280. Its totient is φ = 98568550080000.

The previous prime is 201021222121091. The next prime is 201021222121129. The reversal of 201021222121112 is 211121222120102.

It is a super-2 number, since 2×201021222121112² (a number of 29 digits) contains 22 as substring.

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, 62996307437 + ... + 62996310627.

It is an arithmetic number, because the mean of its divisors is an integer number (3002235296760).

Almost surely, 2^{201021222121112} is an apocalyptic number.

It is an amenable number.

201021222121112 is a deficient number, since it is larger than the sum of its proper divisors (183264895864168).

201021222121112 is a wasteful number, since it uses less digits than its factorization.

201021222121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4873 (or 4869 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 201021222121112 its reverse (211121222120102), we get a palindrome (412142444241214).

The spelling of 201021222121112 in words is "two hundred one trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".