20110101239 has 8 divisors (see below), whose sum is σ = 21660819840. Its totient is φ = 18608611896.

The previous prime is 20110101217. The next prime is 20110101241. The reversal of 20110101239 is 93210101102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110101239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20110101239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110104239) 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, 12306467 + ... + 12308100.

It is an arithmetic number, because the mean of its divisors is an integer number (2707602480).

Almost surely, 2^20110101239 is an apocalyptic number.

20110101239 is a deficient number, since it is larger than the sum of its proper divisors (1550718601).

20110101239 is a wasteful number, since it uses less digits than its factorization.

20110101239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24614629.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 20110101239 in words is "twenty billion, one hundred ten million, one hundred one thousand, two hundred thirty-nine".