2021209974 has 48 divisors (see below), whose sum is σ = 5009202432. Its totient is φ = 576992304.

The previous prime is 2021209921. The next prime is 2021210011. The reversal of 2021209974 is 4799021202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155407 + ... + 167909.

It is an arithmetic number, because the mean of its divisors is an integer number (104358384).

Almost surely, 2^2021209974 is an apocalyptic number.

2021209974 is an abundant number, since it is smaller than the sum of its proper divisors (2987992458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021209974 is a wasteful number, since it uses less digits than its factorization.

2021209974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13801 (or 13798 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2021209974 is about 44957.8688774279. The cubic root of 2021209974 is about 1264.3592132371.

The spelling of 2021209974 in words is "two billion, twenty-one million, two hundred nine thousand, nine hundred seventy-four".