201122210021121 has 32 divisors (see below), whose sum is σ = 298091686083840. Its totient is φ = 134021692022400.

The previous prime is 201122210021069. The next prime is 201122210021141. The reversal of 201122210021121 is 121120012221102.

201122210021121 is a `hidden beast` number, since 201 + 1 + 22 + 210 + 0 + 211 + 21 = 666.

It is not a de Polignac number, because 201122210021121 - 2³⁴ = 201105030151937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201122210021094 and 201122210021103.

It is not an unprimeable number, because it can be changed into a prime (201122210021141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3623077756 + ... + 3623133266.

It is an arithmetic number, because the mean of its divisors is an integer number (9315365190120).

Almost surely, 2^{201122210021121} is an apocalyptic number.

It is an amenable number.

201122210021121 is a deficient number, since it is larger than the sum of its proper divisors (96969476062719).

201122210021121 is a wasteful number, since it uses less digits than its factorization.

201122210021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112934 (or 112928 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201122210021121 its reverse (121120012221102), we get a palindrome (322242222242223).

The spelling of 201122210021121 in words is "two hundred one trillion, one hundred twenty-two billion, two hundred ten million, twenty-one thousand, one hundred twenty-one".