121020021122 has 64 divisors (see below), whose sum is σ = 243844521984. Its totient is φ = 43503704640.

The previous prime is 121020021077. The next prime is 121020021179. The reversal of 121020021122 is 221120020121.

It is a super-2 number, since 2×121020021122² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 121020021097 and 121020021106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4758083 + ... + 4783449.

It is an arithmetic number, because the mean of its divisors is an integer number (3810070656).

Almost surely, 2^121020021122 is an apocalyptic number.

121020021122 is an abundant number, since it is smaller than the sum of its proper divisors (122824500862).

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

121020021122 is a wasteful number, since it uses less digits than its factorization.

121020021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27783.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121020021122 its reverse (221120020121), we get a palindrome (342140041243).

The spelling of 121020021122 in words is "one hundred twenty-one billion, twenty million, twenty-one thousand, one hundred twenty-two".