221022220102021 has 8 divisors (see below), whose sum is σ = 240334841277440. Its totient is φ = 202039729203312.

The previous prime is 221022220102007. The next prime is 221022220102063. The reversal of 221022220102021 is 120201022220122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221022220102021 - 2²⁷ = 221022085884293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221022220102021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221022220102001) 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 7 ways as a sum of consecutive naturals, for example, 82532567781 + ... + 82532570458.

It is an arithmetic number, because the mean of its divisors is an integer number (30041855159680).

Almost surely, 2^{221022220102021} is an apocalyptic number.

It is an amenable number.

221022220102021 is a deficient number, since it is larger than the sum of its proper divisors (19312621175419).

221022220102021 is a wasteful number, since it uses less digits than its factorization.

221022220102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165065138355.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221022220102021 its reverse (120201022220122), we get a palindrome (341223242322143).

The spelling of 221022220102021 in words is "two hundred twenty-one trillion, twenty-two billion, two hundred twenty million, one hundred two thousand, twenty-one".