202220101201021 has 4 divisors (see below), whose sum is σ = 205068271640544. Its totient is φ = 199371930761500.

The previous prime is 202220101201009. The next prime is 202220101201037. The reversal of 202220101201021 is 120102101022202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202220101201021 - 2⁵ = 202220101200989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202220101200986 and 202220101201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202220101201061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1424085219655 + ... + 1424085219796.

It is an arithmetic number, because the mean of its divisors is an integer number (51267067910136).

Almost surely, 2^{202220101201021} is an apocalyptic number.

It is an amenable number.

202220101201021 is a deficient number, since it is larger than the sum of its proper divisors (2848170439523).

202220101201021 is an equidigital number, since it uses as much as digits as its factorization.

202220101201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848170439522.

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

Adding to 202220101201021 its reverse (120102101022202), we get a palindrome (322322202223223).

The spelling of 202220101201021 in words is "two hundred two trillion, two hundred twenty billion, one hundred one million, two hundred one thousand, twenty-one".