2021197876 has 6 divisors (see below), whose sum is σ = 3537096290. Its totient is φ = 1010598936.

The previous prime is 2021197837. The next prime is 2021197879. The reversal of 2021197876 is 6787911202.

It can be written as a sum of positive squares in only one way, i.e., 1657304100 + 363893776 = 40710^2 + 19076^2 .

It is a super-2 number, since 2×2021197876² = 8170481707893822752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021197879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252649731 + ... + 252649738.

Almost surely, 2^2021197876 is an apocalyptic number.

It is an amenable number.

2021197876 is a deficient number, since it is larger than the sum of its proper divisors (1515898414).

2021197876 is a wasteful number, since it uses less digits than its factorization.

2021197876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505299473 (or 505299471 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 2021197876 is about 44957.7343290340. The cubic root of 2021197876 is about 1264.3566906148.

The spelling of 2021197876 in words is "two billion, twenty-one million, one hundred ninety-seven thousand, eight hundred seventy-six".