202210012001221 has 16 divisors (see below), whose sum is σ = 241251987345408. Its totient is φ = 165713439870000.

The previous prime is 202210012001201. The next prime is 202210012001251. The reversal of 202210012001221 is 122100210012202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202210012001221 - 2³⁵ = 202175652262853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202210012001195 and 202210012001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202210012001201) 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, 278616445 + ... + 279341266.

It is an arithmetic number, because the mean of its divisors is an integer number (15078249209088).

Almost surely, 2^{202210012001221} is an apocalyptic number.

It is an amenable number.

202210012001221 is a deficient number, since it is larger than the sum of its proper divisors (39041975344187).

202210012001221 is a wasteful number, since it uses less digits than its factorization.

202210012001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557959992.

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

Adding to 202210012001221 its reverse (122100210012202), we get a palindrome (324310222013423).

It can be divided in two parts, 20221001 and 2001221, that added together give a palindrome (22222222).

The spelling of 202210012001221 in words is "two hundred two trillion, two hundred ten billion, twelve million, one thousand, two hundred twenty-one".