20130122111 has 8 divisors (see below), whose sum is σ = 22005231744. Its totient is φ = 18262528920.

The previous prime is 20130122069. The next prime is 20130122171. The reversal of 20130122111 is 11122103102.

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 20130122111 - 2²² = 20125927807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130122171) 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, 1873505 + ... + 1884218.

It is an arithmetic number, because the mean of its divisors is an integer number (2750653968).

Almost surely, 2^20130122111 is an apocalyptic number.

20130122111 is a deficient number, since it is larger than the sum of its proper divisors (1875109633).

20130122111 is a wasteful number, since it uses less digits than its factorization.

20130122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3758221.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20130122111 its reverse (11122103102), we get a palindrome (31252225213).

It can be divided in two parts, 20130 and 122111, that added together give a palindrome (142241).

The spelling of 20130122111 in words is "twenty billion, one hundred thirty million, one hundred twenty-two thousand, one hundred eleven".