2221978859974 has 24 divisors (see below), whose sum is σ = 3636248802480. Its totient is φ = 1017376638336.

The previous prime is 2221978859897. The next prime is 2221978859987. The reversal of 2221978859974 is 4799588791222.

It is a junction number, because it is equal to n+sod(n) for n = 2221978859897 and 2221978859906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51927994 + ... + 51970765.

It is an arithmetic number, because the mean of its divisors is an integer number (151510366770).

Almost surely, 2^{2221978859974} is an apocalyptic number.

2221978859974 is a deficient number, since it is larger than the sum of its proper divisors (1414269942506).

2221978859974 is a wasteful number, since it uses less digits than its factorization.

2221978859974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103898832 (or 103898815 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 73.

The spelling of 2221978859974 in words is "two trillion, two hundred twenty-one billion, nine hundred seventy-eight million, eight hundred fifty-nine thousand, nine hundred seventy-four".