221023013022 has 24 divisors (see below), whose sum is σ = 547295080176. Its totient is φ = 63149432256.

The previous prime is 221023013009. The next prime is 221023013033. The reversal of 221023013022 is 220310320122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221023012986 and 221023013004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 877075323 + ... + 877075574.

It is an arithmetic number, because the mean of its divisors is an integer number (22803961674).

Almost surely, 2^221023013022 is an apocalyptic number.

221023013022 is an abundant number, since it is smaller than the sum of its proper divisors (326272067154).

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

221023013022 is a wasteful number, since it uses less digits than its factorization.

221023013022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754150912 (or 1754150909 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 221023013022 its reverse (220310320122), we get a palindrome (441333333144).

The spelling of 221023013022 in words is "two hundred twenty-one billion, twenty-three million, thirteen thousand, twenty-two".