101231120123 has 32 divisors (see below), whose sum is σ = 120172416000. Its totient is φ = 85215255552.

The previous prime is 101231120101. The next prime is 101231120189. The reversal of 101231120123 is 321021132101.

It is not a de Polignac number, because 101231120123 - 2¹⁴ = 101231103739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101231120423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29281211 + ... + 29284667.

It is an arithmetic number, because the mean of its divisors is an integer number (3755388000).

Almost surely, 2^101231120123 is an apocalyptic number.

101231120123 is a deficient number, since it is larger than the sum of its proper divisors (18941295877).

101231120123 is an equidigital number, since it uses as much as digits as its factorization.

101231120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984 (or 4970 counting only the distinct ones).

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

Adding to 101231120123 its reverse (321021132101), we get a palindrome (422252252224).

The spelling of 101231120123 in words is "one hundred one billion, two hundred thirty-one million, one hundred twenty thousand, one hundred twenty-three".