102201010123 has 4 divisors (see below), whose sum is σ = 102201725808. Its totient is φ = 102200294440.

The previous prime is 102201010097. The next prime is 102201010139. The reversal of 102201010123 is 321010102201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102201010123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102201017123) 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, 62248 + ... + 456373.

It is an arithmetic number, because the mean of its divisors is an integer number (25550431452).

Almost surely, 2^102201010123 is an apocalyptic number.

102201010123 is a deficient number, since it is larger than the sum of its proper divisors (715685).

102201010123 is an equidigital number, since it uses as much as digits as its factorization.

102201010123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715684.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 102201010123 its reverse (321010102201), we get a palindrome (423211112324).

The spelling of 102201010123 in words is "one hundred two billion, two hundred one million, ten thousand, one hundred twenty-three".