12010111111020 has 72 divisors (see below), whose sum is σ = 36963350251632. Its totient is φ = 2911542085760.

The previous prime is 12010111110997. The next prime is 12010111111067. The reversal of 12010111111020 is 2011111101021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12010111110987 and 12010111111005.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 827135379 + ... + 827149898.

It is an arithmetic number, because the mean of its divisors is an integer number (513379864606).

Almost surely, 2^{12010111111020} is an apocalyptic number.

12010111111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12010111111020 is an abundant number, since it is smaller than the sum of its proper divisors (24953239140612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12010111111020 is a wasteful number, since it uses less digits than its factorization.

12010111111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654285311 (or 1654285298 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 12010111111020 its reverse (2011111101021), we get a palindrome (14021222212041).

Subtracting from 12010111111020 its reverse (2011111101021), we obtain a palindrome (9999000009999).

The spelling of 12010111111020 in words is "twelve trillion, ten billion, one hundred eleven million, one hundred eleven thousand, twenty".