221021102022 has 32 divisors (see below), whose sum is σ = 506009935872. Its totient is φ = 63046530624.

The previous prime is 221021102021. The next prime is 221021102023. The reversal of 221021102022 is 220201120122.

It is an interprime number because it is at equal distance from previous prime (221021102021) and next prime (221021102023).

It is a junction number, because it is equal to n+sod(n) for n = 221021101992 and 221021102010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221021102021) 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 15 ways as a sum of consecutive naturals, for example, 4238598 + ... + 4290425.

It is an arithmetic number, because the mean of its divisors is an integer number (15812810496).

Almost surely, 2^221021102022 is an apocalyptic number.

221021102022 is an abundant number, since it is smaller than the sum of its proper divisors (284988833850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221021102022 is a wasteful number, since it uses less digits than its factorization.

221021102022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8529652.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221021102022 its reverse (220201120122), we get a palindrome (441222222144).

The spelling of 221021102022 in words is "two hundred twenty-one billion, twenty-one million, one hundred two thousand, twenty-two".