2021656116 has 48 divisors (see below), whose sum is σ = 5211851904. Its totient is φ = 606667776.

The previous prime is 2021656079. The next prime is 2021656121. The reversal of 2021656116 is 6116561202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210745 + ... + 220128.

It is an arithmetic number, because the mean of its divisors is an integer number (108580248).

Almost surely, 2^2021656116 is an apocalyptic number.

It is an amenable number.

2021656116 is an abundant number, since it is smaller than the sum of its proper divisors (3190195788).

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

2021656116 is a wasteful number, since it uses less digits than its factorization.

2021656116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430920 (or 430918 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 2021656116 is about 44962.8303824392. The cubic root of 2021656116 is about 1264.4522337969.

The spelling of 2021656116 in words is "two billion, twenty-one million, six hundred fifty-six thousand, one hundred sixteen".