199920010001231 has 8 divisors (see below), whose sum is σ = 215482330969584. Its totient is φ = 184383954555840.

The previous prime is 199920010001119. The next prime is 199920010001291. The reversal of 199920010001231 is 132100010029991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-199920010001231 is a prime.

It is a super-2 number, since 2×199920010001231² (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 (199920010001291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6566364926 + ... + 6566395371.

It is an arithmetic number, because the mean of its divisors is an integer number (26935291371198).

Almost surely, 2^{199920010001231} is an apocalyptic number.

199920010001231 is a deficient number, since it is larger than the sum of its proper divisors (15562320968353).

199920010001231 is a wasteful number, since it uses less digits than its factorization.

199920010001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13132761481.

The product of its (nonzero) digits is 8748, while the sum is 38.

The spelling of 199920010001231 in words is "one hundred ninety-nine trillion, nine hundred twenty billion, ten million, one thousand, two hundred thirty-one".