100631212651 has 2 divisors, whose sum is σ = 100631212652. Its totient is φ = 100631212650.

The previous prime is 100631212639. The next prime is 100631212679. The reversal of 100631212651 is 156212136001.

It is an a-pointer prime, because the next prime (100631212679) can be obtained adding 100631212651 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (156212136001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100631212651 is a prime.

It is a super-2 number, since 2×100631212651² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100631212051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50315606325 + 50315606326.

It is an arithmetic number, because the mean of its divisors is an integer number (50315606326).

Almost surely, 2^100631212651 is an apocalyptic number.

100631212651 is a deficient number, since it is larger than the sum of its proper divisors (1).

100631212651 is an equidigital number, since it uses as much as digits as its factorization.

100631212651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 100631212651 its reverse (156212136001), we get a palindrome (256843348652).

The spelling of 100631212651 in words is "one hundred billion, six hundred thirty-one million, two hundred twelve thousand, six hundred fifty-one".