21203411322 has 16 divisors (see below), whose sum is σ = 42571832832. Its totient is φ = 7040302080.

The previous prime is 21203411309. The next prime is 21203411351. The reversal of 21203411322 is 22311430212.

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, 6873754 + ... + 6876837.

It is an arithmetic number, because the mean of its divisors is an integer number (2660739552).

Almost surely, 2^21203411322 is an apocalyptic number.

21203411322 is an abundant number, since it is smaller than the sum of its proper divisors (21368421510).

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

21203411322 is a wasteful number, since it uses less digits than its factorization.

21203411322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13750853.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21203411322 its reverse (22311430212), we get a palindrome (43514841534).

The spelling of 21203411322 in words is "twenty-one billion, two hundred three million, four hundred eleven thousand, three hundred twenty-two".