20110122013 has 8 divisors (see below), whose sum is σ = 20990611008. Its totient is φ = 19230144384.

The previous prime is 20110121971. The next prime is 20110122017. The reversal of 20110122013 is 31022101102.

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

It is a cyclic number.

It is not a de Polignac number, because 20110122013 - 2²⁹ = 19573251101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110121984 and 20110122002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110122017) 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, 46356 + ... + 205837.

It is an arithmetic number, because the mean of its divisors is an integer number (2623826376).

Almost surely, 2^20110122013 is an apocalyptic number.

20110122013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20110122013 is a deficient number, since it is larger than the sum of its proper divisors (880488995).

20110122013 is a wasteful number, since it uses less digits than its factorization.

20110122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255683.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20110122013 its reverse (31022101102), we get a palindrome (51132223115).

The spelling of 20110122013 in words is "twenty billion, one hundred ten million, one hundred twenty-two thousand, thirteen".