101021111200021 has 8 divisors (see below), whose sum is σ = 102889431971424. Its totient is φ = 99168295165680.

The previous prime is 101021111199961. The next prime is 101021111200027. The reversal of 101021111200021 is 120002111120101.

It is a happy number.

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 101021111200021 - 2²⁷ = 101020976982293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101021111199974 and 101021111200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021111200027) 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, 3876171115 + ... + 3876197176.

It is an arithmetic number, because the mean of its divisors is an integer number (12861178996428).

Almost surely, 2^{101021111200021} is an apocalyptic number.

It is an amenable number.

101021111200021 is a deficient number, since it is larger than the sum of its proper divisors (1868320771403).

101021111200021 is an equidigital number, since it uses as much as digits as its factorization.

101021111200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752368531.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101021111200021 its reverse (120002111120101), we get a palindrome (221023222320122).

The spelling of 101021111200021 in words is "one hundred one trillion, twenty-one billion, one hundred eleven million, two hundred thousand, twenty-one".