202201102101021 has 4 divisors (see below), whose sum is σ = 269601469468032. Its totient is φ = 134800734734012.

The previous prime is 202201102100989. The next prime is 202201102101059. The reversal of 202201102101021 is 120101201102202.

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 202201102101021 - 2⁵ = 202201102100989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201102101091) 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, 33700183683501 + ... + 33700183683506.

It is an arithmetic number, because the mean of its divisors is an integer number (67400367367008).

Almost surely, 2^{202201102101021} is an apocalyptic number.

It is an amenable number.

202201102101021 is a deficient number, since it is larger than the sum of its proper divisors (67400367367011).

202201102101021 is an equidigital number, since it uses as much as digits as its factorization.

202201102101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67400367367010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202201102101021 its reverse (120101201102202), we get a palindrome (322302303203223).

The spelling of 202201102101021 in words is "two hundred two trillion, two hundred one billion, one hundred two million, one hundred one thousand, twenty-one".