121022012100222 has 48 divisors (see below), whose sum is σ = 262458096106752. Its totient is φ = 40303190091600.

The previous prime is 121022012100193. The next prime is 121022012100239. The reversal of 121022012100222 is 222001210220121.

It is a happy number.

121022012100222 is a `hidden beast` number, since 1 + 2 + 10 + 220 + 1 + 210 + 0 + 222 = 666.

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 = 121022012100195 and 121022012100204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83366233 + ... + 84805499.

It is an arithmetic number, because the mean of its divisors is an integer number (5467877002224).

Almost surely, 2^{121022012100222} is an apocalyptic number.

121022012100222 is an abundant number, since it is smaller than the sum of its proper divisors (141436084006530).

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

121022012100222 is a wasteful number, since it uses less digits than its factorization.

121022012100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443613 (or 1443610 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121022012100222 its reverse (222001210220121), we get a palindrome (343023222320343).

The spelling of 121022012100222 in words is "one hundred twenty-one trillion, twenty-two billion, twelve million, one hundred thousand, two hundred twenty-two".