21222303031002 has 16 divisors (see below), whose sum is σ = 42444690755040. Its totient is φ = 7074086894832.

The previous prime is 21222303031001. The next prime is 21222303031049. The reversal of 21222303031002 is 20013030322212.

It is a happy number.

It is a super-2 number, since 2×21222303031002² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21222303031002.

It is not an unprimeable number, because it can be changed into a prime (21222303031001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124 + ... + 6514952.

It is an arithmetic number, because the mean of its divisors is an integer number (2652793172190).

Almost surely, 2^{21222303031002} is an apocalyptic number.

21222303031002 is an abundant number, since it is smaller than the sum of its proper divisors (21222387724038).

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

21222303031002 is a wasteful number, since it uses less digits than its factorization.

21222303031002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7057757.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21222303031002 its reverse (20013030322212), we get a palindrome (41235333353214).

The spelling of 21222303031002 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred three million, thirty-one thousand, two".