221231302131010 has 16 divisors (see below), whose sum is σ = 398219157675000. Its totient is φ = 88491895554816.

The previous prime is 221231302130983. The next prime is 221231302131013. The reversal of 221231302131010 is 10131203132122.

221231302131010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 221125197537841 + 106104593169 = 14870279^2 + 325737^2 .

It is not an unprimeable number, because it can be changed into a prime (221231302131013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76674885 + ... + 79507864.

Almost surely, 2^{221231302131010} is an apocalyptic number.

221231302131010 is a deficient number, since it is larger than the sum of its proper divisors (176987855543990).

221231302131010 is a wasteful number, since it uses less digits than its factorization.

221231302131010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156324405.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 221231302131010 its reverse (10131203132122), we get a palindrome (231362505263132).

The spelling of 221231302131010 in words is "two hundred twenty-one trillion, two hundred thirty-one billion, three hundred two million, one hundred thirty-one thousand, ten".