120221332631 has 2 divisors, whose sum is σ = 120221332632. Its totient is φ = 120221332630.

The previous prime is 120221332607. The next prime is 120221332661. The reversal of 120221332631 is 136233122021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120221332631 is a prime.

It is a super-2 number, since 2×120221332631² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120221332631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120221332601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110666315 + 60110666316.

It is an arithmetic number, because the mean of its divisors is an integer number (60110666316).

Almost surely, 2^120221332631 is an apocalyptic number.

120221332631 is a deficient number, since it is larger than the sum of its proper divisors (1).

120221332631 is an equidigital number, since it uses as much as digits as its factorization.

120221332631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 120221332631 its reverse (136233122021), we get a palindrome (256454454652).

The spelling of 120221332631 in words is "one hundred twenty billion, two hundred twenty-one million, three hundred thirty-two thousand, six hundred thirty-one".