101210129999 has 16 divisors (see below), whose sum is σ = 112436029824. Its totient is φ = 90327506400.

The previous prime is 101210129983. The next prime is 101210130011. The reversal of 101210129999 is 999921012101.

It is a cyclic number.

It is not a de Polignac number, because 101210129999 - 2⁴ = 101210129983 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101210125999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206732 + ... + 495134.

It is an arithmetic number, because the mean of its divisors is an integer number (7027251864).

Almost surely, 2^101210129999 is an apocalyptic number.

101210129999 is a deficient number, since it is larger than the sum of its proper divisors (11225899825).

101210129999 is a wasteful number, since it uses less digits than its factorization.

101210129999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288998.

The product of its (nonzero) digits is 26244, while the sum is 44.

The spelling of 101210129999 in words is "one hundred one billion, two hundred ten million, one hundred twenty-nine thousand, nine hundred ninety-nine".