121211012001222 has 128 divisors (see below), whose sum is σ = 317283293376000. Its totient is φ = 33815717792640.

The previous prime is 121211012001221. The next prime is 121211012001229. The reversal of 121211012001222 is 222100210112121.

121211012001222 is a `hidden beast` number, since 1 + 212 + 110 + 120 + 0 + 1 + 222 = 666.

121211012001222 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121211012001195 and 121211012001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211012001221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17781597 + ... + 23634872.

It is an arithmetic number, because the mean of its divisors is an integer number (2478775729500).

Almost surely, 2^{121211012001222} is an apocalyptic number.

121211012001222 is an abundant number, since it is smaller than the sum of its proper divisors (196072281374778).

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

121211012001222 is a wasteful number, since it uses less digits than its factorization.

121211012001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41416883 (or 41416877 counting only the distinct ones).

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

Adding to 121211012001222 its reverse (222100210112121), we get a palindrome (343311222113343).

The spelling of 121211012001222 in words is "one hundred twenty-one trillion, two hundred eleven billion, twelve million, one thousand, two hundred twenty-two".