99913222001231 has 4 divisors (see below), whose sum is σ = 100301989402272. Its totient is φ = 99524454600192.

The previous prime is 99913222001213. The next prime is 99913222001269. The reversal of 99913222001231 is 13210022231999.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99913222001231 - 2¹⁴ = 99913221984847 is a prime.

It is a super-2 number, since 2×99913222001231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99913222001531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194383700135 + ... + 194383700648.

It is an arithmetic number, because the mean of its divisors is an integer number (25075497350568).

Almost surely, 2^{99913222001231} is an apocalyptic number.

99913222001231 is a deficient number, since it is larger than the sum of its proper divisors (388767401041).

99913222001231 is a wasteful number, since it uses less digits than its factorization.

99913222001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388767401040.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 99913222001231 in words is "ninety-nine trillion, nine hundred thirteen billion, two hundred twenty-two million, one thousand, two hundred thirty-one".