21000313110122 has 32 divisors (see below), whose sum is σ = 32253317933760. Its totient is φ = 10249516327680.

The previous prime is 21000313110107. The next prime is 21000313110131. The reversal of 21000313110122 is 22101131300012.

It is a self number, because there is not a number n which added to its sum of digits gives 21000313110122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1805230418 + ... + 1805242050.

It is an arithmetic number, because the mean of its divisors is an integer number (1007916185430).

Almost surely, 2^{21000313110122} is an apocalyptic number.

21000313110122 is a deficient number, since it is larger than the sum of its proper divisors (11253004823638).

21000313110122 is a wasteful number, since it uses less digits than its factorization.

21000313110122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23078.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21000313110122 its reverse (22101131300012), we get a palindrome (43101444410134).

The spelling of 21000313110122 in words is "twenty-one trillion, three hundred thirteen million, one hundred ten thousand, one hundred twenty-two".