2021212863 has 24 divisors (see below), whose sum is σ = 3001752000. Its totient is φ = 1309913664.

The previous prime is 2021212847. The next prime is 2021212933. The reversal of 2021212863 is 3682121202.

It is not a de Polignac number, because 2021212863 - 2⁴ = 2021212847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021212813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46993 + ... + 79061.

It is an arithmetic number, because the mean of its divisors is an integer number (125073000).

Almost surely, 2^2021212863 is an apocalyptic number.

2021212863 is a deficient number, since it is larger than the sum of its proper divisors (980539137).

2021212863 is a wasteful number, since it uses less digits than its factorization.

2021212863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32271 (or 32268 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2021212863 is about 44957.9010074981. The cubic root of 2021212863 is about 1264.3598156373.

The spelling of 2021212863 in words is "two billion, twenty-one million, two hundred twelve thousand, eight hundred sixty-three".