202201111122221 has 16 divisors (see below), whose sum is σ = 207355082440704. Its totient is φ = 197067687539184.

The previous prime is 202201111122217. The next prime is 202201111122337. The reversal of 202201111122221 is 122221111102202.

It is a cyclic number.

It is not a de Polignac number, because 202201111122221 - 2² = 202201111122217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202201111122193 and 202201111122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201111122721) 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, 1161941600 + ... + 1162115606.

It is an arithmetic number, because the mean of its divisors is an integer number (12959692652544).

Almost surely, 2^{202201111122221} is an apocalyptic number.

It is an amenable number.

202201111122221 is a deficient number, since it is larger than the sum of its proper divisors (5153971318483).

202201111122221 is a wasteful number, since it uses less digits than its factorization.

202201111122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232880.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 202201111122221 its reverse (122221111102202), we get a palindrome (324422222224423).

The spelling of 202201111122221 in words is "two hundred two trillion, two hundred one billion, one hundred eleven million, one hundred twenty-two thousand, two hundred twenty-one".