101021220202021 has 8 divisors (see below), whose sum is σ = 115621860901824. Its totient is φ = 86462838955680.

The previous prime is 101021220202013. The next prime is 101021220202043. The reversal of 101021220202021 is 120202022120101.

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 101021220202021 - 2³ = 101021220202013 is a prime.

It is a super-2 number, since 2×101021220202021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101021220201986 and 101021220202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021220202051) 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, 10564858240 + ... + 10564867801.

It is an arithmetic number, because the mean of its divisors is an integer number (14452732612728).

Almost surely, 2^{101021220202021} is an apocalyptic number.

It is an amenable number.

101021220202021 is a deficient number, since it is larger than the sum of its proper divisors (14600640699803).

101021220202021 is an equidigital number, since it uses as much as digits as its factorization.

101021220202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21129726731.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 101021220202021 its reverse (120202022120101), we get a palindrome (221223242322122).

The spelling of 101021220202021 in words is "one hundred one trillion, twenty-one billion, two hundred twenty million, two hundred two thousand, twenty-one".