20112120111019 has 4 divisors (see below), whose sum is σ = 20113429423960. Its totient is φ = 20110810798080.

The previous prime is 20112120111001. The next prime is 20112120111091. The reversal of 20112120111019 is 91011102121102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20112120111019 - 2⁵ = 20112120110987 is a prime.

It is a super-2 number, since 2×20112120111019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112120111719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654633429 + ... + 654664150.

It is an arithmetic number, because the mean of its divisors is an integer number (5028357355990).

Almost surely, 2^{20112120111019} is an apocalyptic number.

20112120111019 is a deficient number, since it is larger than the sum of its proper divisors (1309312941).

20112120111019 is a wasteful number, since it uses less digits than its factorization.

20112120111019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309312940.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 20112120111019 in words is "twenty trillion, one hundred twelve billion, one hundred twenty million, one hundred eleven thousand, nineteen".