202202111101221 has 64 divisors (see below), whose sum is σ = 374676648652800. Its totient is φ = 104702307998400.

The previous prime is 202202111101201. The next prime is 202202111101259. The reversal of 202202111101221 is 122101111202202.

202202111101221 is a `hidden beast` number, since 2 + 0 + 220 + 211 + 1 + 10 + 1 + 221 = 666.

It is not a de Polignac number, because 202202111101221 - 2²¹ = 202202109004069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202202111101194 and 202202111101203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202202111101201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 155718886 + ... + 157012023.

It is an arithmetic number, because the mean of its divisors is an integer number (5854322635200).

Almost surely, 2^{202202111101221} is an apocalyptic number.

202202111101221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202202111101221 is a deficient number, since it is larger than the sum of its proper divisors (172474537551579).

202202111101221 is a wasteful number, since it uses less digits than its factorization.

202202111101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312731247 (or 312731241 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 202202111101221 its reverse (122101111202202), we get a palindrome (324303222303423).

The spelling of 202202111101221 in words is "two hundred two trillion, two hundred two billion, one hundred eleven million, one hundred one thousand, two hundred twenty-one".