202221211201021 has 16 divisors (see below), whose sum is σ = 216833122995840. Its totient is φ = 188039088437760.

The previous prime is 202221211201013. The next prime is 202221211201049. The reversal of 202221211201021 is 120102112122202.

It is a cyclic number.

It is not a de Polignac number, because 202221211201021 - 2³ = 202221211201013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 202221211201021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221211204021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 457001200 + ... + 457443481.

It is an arithmetic number, because the mean of its divisors is an integer number (13552070187240).

Almost surely, 2^{202221211201021} is an apocalyptic number.

It is an amenable number.

202221211201021 is a deficient number, since it is larger than the sum of its proper divisors (14611911794819).

202221211201021 is a wasteful number, since it uses less digits than its factorization.

202221211201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914444916.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 202221211201021 its reverse (120102112122202), we get a palindrome (322323323323223).

The spelling of 202221211201021 in words is "two hundred two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred one thousand, twenty-one".