101012321123 has 16 divisors (see below), whose sum is σ = 119440988160. Its totient is φ = 83584116000.

The previous prime is 101012321117. The next prime is 101012321143. The reversal of 101012321123 is 321123210101.

It is not a de Polignac number, because 101012321123 - 2¹² = 101012317027 is a prime.

It is a super-2 number, since 2×101012321123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101012321143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1508198 + ... + 1573748.

It is an arithmetic number, because the mean of its divisors is an integer number (7465061760).

Almost surely, 2^101012321123 is an apocalyptic number.

101012321123 is a deficient number, since it is larger than the sum of its proper divisors (18428667037).

101012321123 is an equidigital number, since it uses as much as digits as its factorization.

101012321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73178.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101012321123 its reverse (321123210101), we get a palindrome (422135531224).

The spelling of 101012321123 in words is "one hundred one billion, twelve million, three hundred twenty-one thousand, one hundred twenty-three".