1115214545021 has 4 divisors (see below), whose sum is σ = 1138942514112. Its totient is φ = 1091486575932.

The previous prime is 1115214544981. The next prime is 1115214545063. The reversal of 1115214545021 is 1205454125111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1115214545021 - 2⁶ = 1115214544957 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 (1115214547021) 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, 11863984475 + ... + 11863984568.

It is an arithmetic number, because the mean of its divisors is an integer number (284735628528).

Almost surely, 2^{1115214545021} is an apocalyptic number.

It is an amenable number.

1115214545021 is a deficient number, since it is larger than the sum of its proper divisors (23727969091).

1115214545021 is an equidigital number, since it uses as much as digits as its factorization.

1115214545021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23727969090.

The product of its (nonzero) digits is 8000, while the sum is 32.

The spelling of 1115214545021 in words is "one trillion, one hundred fifteen billion, two hundred fourteen million, five hundred forty-five thousand, twenty-one".