21321003203122 has 8 divisors (see below), whose sum is σ = 36550291205376. Its totient is φ = 9137572801332.

The previous prime is 21321003203113. The next prime is 21321003203147. The reversal of 21321003203122 is 22130230012312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21321003203093 and 21321003203102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761464400098 + ... + 761464400125.

It is an arithmetic number, because the mean of its divisors is an integer number (4568786400672).

Almost surely, 2^{21321003203122} is an apocalyptic number.

21321003203122 is a deficient number, since it is larger than the sum of its proper divisors (15229288002254).

21321003203122 is a wasteful number, since it uses less digits than its factorization.

21321003203122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522928800232.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21321003203122 its reverse (22130230012312), we get a palindrome (43451233215434).

The spelling of 21321003203122 in words is "twenty-one trillion, three hundred twenty-one billion, three million, two hundred three thousand, one hundred twenty-two".