99228630121 has 2 divisors, whose sum is σ = 99228630122. Its totient is φ = 99228630120.

The previous prime is 99228630113. The next prime is 99228630203. The reversal of 99228630121 is 12103682299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74245350400 + 24983279721 = 272480^2 + 158061^2 .

It is a cyclic number.

It is not a de Polignac number, because 99228630121 - 2³ = 99228630113 is a prime.

It is not a weakly prime, because it can be changed into another prime (99228631121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49614315060 + 49614315061.

It is an arithmetic number, because the mean of its divisors is an integer number (49614315061).

Almost surely, 2^99228630121 is an apocalyptic number.

It is an amenable number.

99228630121 is a deficient number, since it is larger than the sum of its proper divisors (1).

99228630121 is an equidigital number, since it uses as much as digits as its factorization.

99228630121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 99228630121 in words is "ninety-nine billion, two hundred twenty-eight million, six hundred thirty thousand, one hundred twenty-one".