20121331030985 has 16 divisors (see below), whose sum is σ = 25663135360896. Its totient is φ = 15092573399808.

The previous prime is 20121331030973. The next prime is 20121331031003. The reversal of 20121331030985 is 58903013312102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20121331030985 - 2⁸ = 20121331030729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450018599 + ... + 450063308.

It is an arithmetic number, because the mean of its divisors is an integer number (1603945960056).

Almost surely, 2^{20121331030985} is an apocalyptic number.

It is an amenable number.

20121331030985 is a deficient number, since it is larger than the sum of its proper divisors (5541804329911).

20121331030985 is a wasteful number, since it uses less digits than its factorization.

20121331030985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900082192.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 20121331030985 in words is "twenty trillion, one hundred twenty-one billion, three hundred thirty-one million, thirty thousand, nine hundred eighty-five".