2100012020018 has 32 divisors (see below), whose sum is σ = 3653059970880. Its totient is φ = 895357800000.

The previous prime is 2100012020011. The next prime is 2100012020033. The reversal of 2100012020018 is 8100202100012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2100012019978 and 2100012020005.

It is not an unprimeable number, because it can be changed into a prime (2100012020011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24828833 + ... + 24913268.

It is an arithmetic number, because the mean of its divisors is an integer number (114158124090).

Almost surely, 2^{2100012020018} is an apocalyptic number.

2100012020018 is a deficient number, since it is larger than the sum of its proper divisors (1553047950862).

2100012020018 is a wasteful number, since it uses less digits than its factorization.

2100012020018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49742234.

The product of its (nonzero) digits is 64, while the sum is 17.

The spelling of 2100012020018 in words is "two trillion, one hundred billion, twelve million, twenty thousand, eighteen".