22202211021221 has 96 divisors (see below), whose sum is σ = 30398407522560. Its totient is φ = 15739801804800.

The previous prime is 22202211021217. The next prime is 22202211021241. The reversal of 22202211021221 is 12212011220222.

It is not a de Polignac number, because 22202211021221 - 2² = 22202211021217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22202211021193 and 22202211021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202211021241) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 99337031 + ... + 99560283.

It is an arithmetic number, because the mean of its divisors is an integer number (316650078360).

Almost surely, 2^{22202211021221} is an apocalyptic number.

It is an amenable number.

22202211021221 is a deficient number, since it is larger than the sum of its proper divisors (8196196501339).

22202211021221 is a wasteful number, since it uses less digits than its factorization.

22202211021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223455 (or 223438 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22202211021221 its reverse (12212011220222), we get a palindrome (34414222241443).

The spelling of 22202211021221 in words is "twenty-two trillion, two hundred two billion, two hundred eleven million, twenty-one thousand, two hundred twenty-one".