121102022021220 has 72 divisors (see below), whose sum is σ = 380948089040064. Its totient is φ = 32293872537696.

The previous prime is 121102022021191. The next prime is 121102022021251. The reversal of 121102022021220 is 22120220201121.

It is a happy number.

121102022021220 is a `hidden beast` number, since 1 + 211 + 0 + 2 + 0 + 220 + 212 + 20 = 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 = 121102022021193 and 121102022021202.

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, 12459050904 + ... + 12459060623.

It is an arithmetic number, because the mean of its divisors is an integer number (5290945681112).

Almost surely, 2^{121102022021220} is an apocalyptic number.

121102022021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121102022021220 is an abundant number, since it is smaller than the sum of its proper divisors (259846067018844).

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

121102022021220 is a wasteful number, since it uses less digits than its factorization.

121102022021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24918111551 (or 24918111537 counting only the distinct ones).

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

Adding to 121102022021220 its reverse (22120220201121), we get a palindrome (143222242222341).

The spelling of 121102022021220 in words is "one hundred twenty-one trillion, one hundred two billion, twenty-two million, twenty-one thousand, two hundred twenty".