20312231201210 has 16 divisors (see below), whose sum is σ = 39374478944136. Its totient is φ = 7499900751168.

The previous prime is 20312231201191. The next prime is 20312231201257. The reversal of 20312231201210 is 1210213221302.

It can be written as a sum of positive squares in 4 ways, for example, as 9568461583849 + 10743769617361 = 3093293^2 + 3277769^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78123966029 + ... + 78123966288.

Almost surely, 2^{20312231201210} is an apocalyptic number.

20312231201210 is a deficient number, since it is larger than the sum of its proper divisors (19062247742926).

20312231201210 is a wasteful number, since it uses less digits than its factorization.

20312231201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156247932337.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20312231201210 its reverse (1210213221302), we get a palindrome (21522444422512).

The spelling of 20312231201210 in words is "twenty trillion, three hundred twelve billion, two hundred thirty-one million, two hundred one thousand, two hundred ten".