102131223245 has 16 divisors (see below), whose sum is σ = 125838074880. Its totient is φ = 79527158400.

The previous prime is 102131223223. The next prime is 102131223263. The reversal of 102131223245 is 542322131201.

It is not a de Polignac number, because 102131223245 - 2¹² = 102131219149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489605 + ... + 666314.

It is an arithmetic number, because the mean of its divisors is an integer number (7864879680).

Almost surely, 2^102131223245 is an apocalyptic number.

It is an amenable number.

102131223245 is a deficient number, since it is larger than the sum of its proper divisors (23706851635).

102131223245 is a wasteful number, since it uses less digits than its factorization.

102131223245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156396.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 102131223245 its reverse (542322131201), we get a palindrome (644453354446).

The spelling of 102131223245 in words is "one hundred two billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred forty-five".