102220013123 has 4 divisors (see below), whose sum is σ = 102238661688. Its totient is φ = 102201364560.

The previous prime is 102220013113. The next prime is 102220013153. The reversal of 102220013123 is 321310022201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102220013123 - 2¹⁰ = 102220012099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102220013113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9316058 + ... + 9327023.

It is an arithmetic number, because the mean of its divisors is an integer number (25559665422).

Almost surely, 2^102220013123 is an apocalyptic number.

102220013123 is a deficient number, since it is larger than the sum of its proper divisors (18648565).

102220013123 is an equidigital number, since it uses as much as digits as its factorization.

102220013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18648564.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 102220013123 its reverse (321310022201), we get a palindrome (423530035324).

The spelling of 102220013123 in words is "one hundred two billion, two hundred twenty million, thirteen thousand, one hundred twenty-three".