202022221221121 has 4 divisors (see below), whose sum is σ = 230882538538432. Its totient is φ = 173161903903812.

The previous prime is 202022221221103. The next prime is 202022221221179. The reversal of 202022221221121 is 121122122220202.

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 202022221221121 - 2⁹ = 202022221220609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202022221221092 and 202022221221101.

It is not an unprimeable number, because it can be changed into a prime (202022221221421) 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, 14430158658645 + ... + 14430158658658.

It is an arithmetic number, because the mean of its divisors is an integer number (57720634634608).

Almost surely, 2^{202022221221121} is an apocalyptic number.

It is an amenable number.

202022221221121 is a deficient number, since it is larger than the sum of its proper divisors (28860317317311).

202022221221121 is an equidigital number, since it uses as much as digits as its factorization.

202022221221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28860317317310.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 202022221221121 its reverse (121122122220202), we get a palindrome (323144343441323).

The spelling of 202022221221121 in words is "two hundred two trillion, twenty-two billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-one".