21221132322302 has 48 divisors (see below), whose sum is σ = 35826303614976. Its totient is φ = 9416084475600.

The previous prime is 21221132322301. The next prime is 21221132322343. The reversal of 21221132322302 is 20322323112212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221132322301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1920527 + ... + 6791957.

It is an arithmetic number, because the mean of its divisors is an integer number (746381325312).

Almost surely, 2^{21221132322302} is an apocalyptic number.

21221132322302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21221132322302 is a deficient number, since it is larger than the sum of its proper divisors (14605171292674).

21221132322302 is a wasteful number, since it uses less digits than its factorization.

21221132322302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4871885 (or 4871874 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21221132322302 its reverse (20322323112212), we get a palindrome (41543455434514).

The spelling of 21221132322302 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred thirty-two million, three hundred twenty-two thousand, three hundred two".