2021616572 has 12 divisors (see below), whose sum is σ = 3542207760. Its totient is φ = 1009557216.

The previous prime is 2021616563. The next prime is 2021616581. The reversal of 2021616572 is 2756161202.

It is an interprime number because it is at equal distance from previous prime (2021616563) and next prime (2021616581).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309128 + ... + 315599.

It is an arithmetic number, because the mean of its divisors is an integer number (295183980).

Almost surely, 2^2021616572 is an apocalyptic number.

It is an amenable number.

2021616572 is a deficient number, since it is larger than the sum of its proper divisors (1520591188).

2021616572 is a wasteful number, since it uses less digits than its factorization.

2021616572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625540 (or 625538 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2021616572 is about 44962.3906392887. The cubic root of 2021616572 is about 1264.4439894299.

Adding to 2021616572 its reverse (2756161202), we get a palindrome (4777777774).

The spelling of 2021616572 in words is "two billion, twenty-one million, six hundred sixteen thousand, five hundred seventy-two".