21003313321122 has 64 divisors (see below), whose sum is σ = 46565489599488. Its totient is φ = 6262216856000.

The previous prime is 21003313321093. The next prime is 21003313321171. The reversal of 21003313321122 is 22112331330012.

It is a super-2 number, since 2×21003313321122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21003313321092 and 21003313321101.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2263473 + ... + 6865124.

It is an arithmetic number, because the mean of its divisors is an integer number (727585774992).

Almost surely, 2^{21003313321122} is an apocalyptic number.

21003313321122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21003313321122 is an abundant number, since it is smaller than the sum of its proper divisors (25562176278366).

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

21003313321122 is a wasteful number, since it uses less digits than its factorization.

21003313321122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9129175.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21003313321122 its reverse (22112331330012), we get a palindrome (43115644651134).

The spelling of 21003313321122 in words is "twenty-one trillion, three billion, three hundred thirteen million, three hundred twenty-one thousand, one hundred twenty-two".