101421131 has 6 divisors (see below), whose sum is σ = 117979740. Its totient is φ = 86932356.

The previous prime is 101421097. The next prime is 101421179. The reversal of 101421131 is 131124101.

It is a de Polignac number, because none of the positive numbers 2^k-101421131 is a prime.

It is a super-2 number, since 2×101421131² = 20572491626638322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101421631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1034861 + ... + 1034958.

It is an arithmetic number, because the mean of its divisors is an integer number (19663290).

Almost surely, 2^101421131 is an apocalyptic number.

101421131 is a deficient number, since it is larger than the sum of its proper divisors (16558609).

101421131 is an equidigital number, since it uses as much as digits as its factorization.

101421131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069833 (or 2069826 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 101421131 is about 10070.8058763934. The cubic root of 101421131 is about 466.3473176242.

Adding to 101421131 its reverse (131124101), we get a palindrome (232545232).

The spelling of 101421131 in words is "one hundred one million, four hundred twenty-one thousand, one hundred thirty-one".