2121200019974 has 32 divisors (see below), whose sum is σ = 3739771084800. Its totient is φ = 901927530504.

The previous prime is 2121200019941. The next prime is 2121200020031. The reversal of 2121200019974 is 4799100021212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12086612 + ... + 12260855.

It is an arithmetic number, because the mean of its divisors is an integer number (116867846400).

Almost surely, 2^{2121200019974} is an apocalyptic number.

2121200019974 is a deficient number, since it is larger than the sum of its proper divisors (1618571064826).

2121200019974 is a wasteful number, since it uses less digits than its factorization.

2121200019974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24347617 (or 24347603 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 2121200019974 in words is "two trillion, one hundred twenty-one billion, two hundred million, nineteen thousand, nine hundred seventy-four".