21031320031122 has 8 divisors (see below), whose sum is σ = 42062640062256. Its totient is φ = 7010440010372.

The previous prime is 21031320030983. The next prime is 21031320031147. The reversal of 21031320031122 is 22113002313012.

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

21031320031122 is an admirable number.

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, 1752610002588 + ... + 1752610002599.

It is an arithmetic number, because the mean of its divisors is an integer number (5257830007782).

Almost surely, 2^{21031320031122} is an apocalyptic number.

21031320031122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21031320031122 is a wasteful number, since it uses less digits than its factorization.

21031320031122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505220005192.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21031320031122 its reverse (22113002313012), we get a palindrome (43144322344134).

The spelling of 21031320031122 in words is "twenty-one trillion, thirty-one billion, three hundred twenty million, thirty-one thousand, one hundred twenty-two".