101131100021 has 8 divisors (see below), whose sum is σ = 118266270144. Its totient is φ = 84667897440.

The previous prime is 101131100017. The next prime is 101131100023. The reversal of 101131100021 is 120001131101.

It is a happy number.

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

It is not a de Polignac number, because 101131100021 - 2² = 101131100017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101131099975 and 101131100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101131100023) 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, 167991560 + ... + 167992161.

It is an arithmetic number, because the mean of its divisors is an integer number (14783283768).

Almost surely, 2^101131100021 is an apocalyptic number.

It is an amenable number.

101131100021 is a deficient number, since it is larger than the sum of its proper divisors (17135170123).

101131100021 is an equidigital number, since it uses as much as digits as its factorization.

101131100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335983771.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 101131100021 its reverse (120001131101), we get a palindrome (221132231122).

The spelling of 101131100021 in words is "one hundred one billion, one hundred thirty-one million, one hundred thousand, twenty-one".