220121020102 has 16 divisors (see below), whose sum is σ = 330878449440. Its totient is φ = 109828450368.

The previous prime is 220121020043. The next prime is 220121020109. The reversal of 220121020102 is 201020121022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121020109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1751424 + ... + 1872892.

It is an arithmetic number, because the mean of its divisors is an integer number (20679903090).

Almost surely, 2^220121020102 is an apocalyptic number.

220121020102 is a deficient number, since it is larger than the sum of its proper divisors (110757429338).

220121020102 is a wasteful number, since it uses less digits than its factorization.

220121020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123375.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220121020102 its reverse (201020121022), we get a palindrome (421141141124).

The spelling of 220121020102 in words is "two hundred twenty billion, one hundred twenty-one million, twenty thousand, one hundred two".