221012120102 has 16 divisors (see below), whose sum is σ = 337282589952. Its totient is φ = 108594730440.

The previous prime is 221012120047. The next prime is 221012120111. The reversal of 221012120102 is 201021210122.

221012120102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2491298 + ... + 2578485.

It is an arithmetic number, because the mean of its divisors is an integer number (21080161872).

Almost surely, 2^221012120102 is an apocalyptic number.

221012120102 is a deficient number, since it is larger than the sum of its proper divisors (116270469850).

221012120102 is a wasteful number, since it uses less digits than its factorization.

221012120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070163.

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

Adding to 221012120102 its reverse (201021210122), we get a palindrome (422033330224).

The spelling of 221012120102 in words is "two hundred twenty-one billion, twelve million, one hundred twenty thousand, one hundred two".