121121021220022 has 16 divisors (see below), whose sum is σ = 182365433933760. Its totient is φ = 60332742605448.

The previous prime is 121121021219977. The next prime is 121121021220047. The reversal of 121121021220022 is 220022120121121.

It is a super-2 number, since 2×121121021220022² (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 7 ways as a sum of consecutive naturals, for example, 48624588 + ... + 51054799.

It is an arithmetic number, because the mean of its divisors is an integer number (11397839620860).

Almost surely, 2^{121121021220022} is an apocalyptic number.

121121021220022 is a deficient number, since it is larger than the sum of its proper divisors (61244412713738).

121121021220022 is a wasteful number, since it uses less digits than its factorization.

121121021220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99681675.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121121021220022 its reverse (220022120121121), we get a palindrome (341143141341143).

The spelling of 121121021220022 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twenty-one million, two hundred twenty thousand, twenty-two".