101220102110021 has 8 divisors (see below), whose sum is σ = 101993016153600. Its totient is φ = 100447191725920.

The previous prime is 101220102109961. The next prime is 101220102110041. The reversal of 101220102110021 is 120011201022101.

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 101220102110021 - 2³⁰ = 101219028368197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101220102109978 and 101220102110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220102110041) 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, 86064425 + ... + 87232593.

It is an arithmetic number, because the mean of its divisors is an integer number (12749127019200).

Almost surely, 2^{101220102110021} is an apocalyptic number.

It is an amenable number.

101220102110021 is a deficient number, since it is larger than the sum of its proper divisors (772914043579).

101220102110021 is a wasteful number, since it uses less digits than its factorization.

101220102110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829739.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101220102110021 its reverse (120011201022101), we get a palindrome (221231303132122).

The spelling of 101220102110021 in words is "one hundred one trillion, two hundred twenty billion, one hundred two million, one hundred ten thousand, twenty-one".