111020219974 has 4 divisors (see below), whose sum is σ = 166530329964. Its totient is φ = 55510109986.

The previous prime is 111020219971. The next prime is 111020220007. The reversal of 111020219974 is 479912020111.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020219971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27755054992 + ... + 27755054995.

It is an arithmetic number, because the mean of its divisors is an integer number (41632582491).

Almost surely, 2^111020219974 is an apocalyptic number.

111020219974 is a deficient number, since it is larger than the sum of its proper divisors (55510109990).

111020219974 is an equidigital number, since it uses as much as digits as its factorization.

111020219974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55510109989.

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 111020219974 in words is "one hundred eleven billion, twenty million, two hundred nineteen thousand, nine hundred seventy-four".