1118211862051 has 4 divisors (see below), whose sum is σ = 1118214053712. Its totient is φ = 1118209670392.

The previous prime is 1118211862039. The next prime is 1118211862067. The reversal of 1118211862051 is 1502681128111.

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 1118211862051 - 2²⁵ = 1118178307619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1118211862051.

It is not an unprimeable number, because it can be changed into a prime (1118211862021) 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, 116730 + ... + 1500016.

It is an arithmetic number, because the mean of its divisors is an integer number (279553513428).

Almost surely, 2^{1118211862051} is an apocalyptic number.

1118211862051 is a deficient number, since it is larger than the sum of its proper divisors (2191661).

1118211862051 is an equidigital number, since it uses as much as digits as its factorization.

1118211862051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191660.

The product of its (nonzero) digits is 7680, while the sum is 37.

The spelling of 1118211862051 in words is "one trillion, one hundred eighteen billion, two hundred eleven million, eight hundred sixty-two thousand, fifty-one".