202211021112221 has 24 divisors (see below), whose sum is σ = 221715373856544. Its totient is φ = 182898241716960.

The previous prime is 202211021112169. The next prime is 202211021112259. The reversal of 202211021112221 is 122211120112202.

It is not a de Polignac number, because 202211021112221 - 2¹⁸ = 202211020850077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202211021112193 and 202211021112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202211021112271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 955536395 + ... + 955747991.

It is an arithmetic number, because the mean of its divisors is an integer number (9238140577356).

Almost surely, 2^{202211021112221} is an apocalyptic number.

It is an amenable number.

202211021112221 is a deficient number, since it is larger than the sum of its proper divisors (19504352744323).

202211021112221 is a wasteful number, since it uses less digits than its factorization.

202211021112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213801 (or 213578 counting only the distinct ones).

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

Adding to 202211021112221 its reverse (122211120112202), we get a palindrome (324422141224423).

The spelling of 202211021112221 in words is "two hundred two trillion, two hundred eleven billion, twenty-one million, one hundred twelve thousand, two hundred twenty-one".