21322211010 has 16 divisors (see below), whose sum is σ = 51173306496. Its totient is φ = 5685922928.

The previous prime is 21322211003. The next prime is 21322211017. The reversal of 21322211010 is 1011222312.

It is an interprime number because it is at equal distance from previous prime (21322211003) and next prime (21322211017).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (21322211017) 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, 355370154 + ... + 355370213.

It is an arithmetic number, because the mean of its divisors is an integer number (3198331656).

Almost surely, 2^21322211010 is an apocalyptic number.

21322211010 is an abundant number, since it is smaller than the sum of its proper divisors (29851095486).

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

21322211010 is a wasteful number, since it uses less digits than its factorization.

21322211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710740377.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21322211010 its reverse (1011222312), we get a palindrome (22333433322).

The spelling of 21322211010 in words is "twenty-one billion, three hundred twenty-two million, two hundred eleven thousand, ten".