220102120121 has 12 divisors (see below), whose sum is σ = 246023677440. Its totient is φ = 196617273840.

The previous prime is 220102120099. The next prime is 220102120141. The reversal of 220102120121 is 121021201022.

It is a de Polignac number, because none of the positive numbers 2^k-220102120121 is a prime.

It is a super-2 number, since 2×220102120121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220102120096 and 220102120105.

It is not an unprimeable number, because it can be changed into a prime (220102120141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21000881 + ... + 21011358.

It is an arithmetic number, because the mean of its divisors is an integer number (20501973120).

Almost surely, 2^220102120121 is an apocalyptic number.

It is an amenable number.

220102120121 is a deficient number, since it is larger than the sum of its proper divisors (25921557319).

220102120121 is a wasteful number, since it uses less digits than its factorization.

220102120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42012296 (or 42012283 counting only the distinct ones).

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

Adding to 220102120121 its reverse (121021201022), we get a palindrome (341123321143).

The spelling of 220102120121 in words is "two hundred twenty billion, one hundred two million, one hundred twenty thousand, one hundred twenty-one".