221102021022 has 16 divisors (see below), whose sum is σ = 442788204432. Its totient is φ = 73603313280.

The previous prime is 221102021003. The next prime is 221102021033. The reversal of 221102021022 is 220120201122.

It is a super-2 number, since 2×221102021022² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221102020992 and 221102021010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24335179 + ... + 24344262.

It is an arithmetic number, because the mean of its divisors is an integer number (27674262777).

Almost surely, 2^221102021022 is an apocalyptic number.

221102021022 is an abundant number, since it is smaller than the sum of its proper divisors (221686183410).

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

221102021022 is a wasteful number, since it uses less digits than its factorization.

221102021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48680203.

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

Adding to 221102021022 its reverse (220120201122), we get a palindrome (441222222144).

The spelling of 221102021022 in words is "two hundred twenty-one billion, one hundred two million, twenty-one thousand, twenty-two".