101131020021 has 8 divisors (see below), whose sum is σ = 134913206304. Its totient is φ = 67384756880.

The previous prime is 101131020013. The next prime is 101131020031. The reversal of 101131020021 is 120020131101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101131020021 - 2³ = 101131020013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101131019979 and 101131020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101131020031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8974215 + ... + 8985476.

It is an arithmetic number, because the mean of its divisors is an integer number (16864150788).

Almost surely, 2^101131020021 is an apocalyptic number.

It is an amenable number.

101131020021 is a deficient number, since it is larger than the sum of its proper divisors (33782186283).

101131020021 is a wasteful number, since it uses less digits than its factorization.

101131020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17961571.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 101131020021 its reverse (120020131101), we get a palindrome (221151151122).

The spelling of 101131020021 in words is "one hundred one billion, one hundred thirty-one million, twenty thousand, twenty-one".