201222221002 has 24 divisors (see below), whose sum is σ = 331822098468. Its totient is φ = 91449515520.

The previous prime is 201222220973. The next prime is 201222221003. The reversal of 201222221002 is 200122222102.

It can be written as a sum of positive squares in 2 ways, for example, as 185829104241 + 15393116761 = 431079^2 + 124069^2 .

It is not an unprimeable number, because it can be changed into a prime (201222221003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1467948 + ... + 1599160.

Almost surely, 2^201222221002 is an apocalyptic number.

201222221002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201222221002 is a deficient number, since it is larger than the sum of its proper divisors (130599877466).

201222221002 is a wasteful number, since it uses less digits than its factorization.

201222221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137574 (or 137563 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 201222221002 its reverse (200122222102), we get a palindrome (401344443104).

It can be divided in two parts, 20122222100 and 2, that added together give a palindrome (20122222102).

The spelling of 201222221002 in words is "two hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, two".