212021023399 has 2 divisors, whose sum is σ = 212021023400. Its totient is φ = 212021023398.

The previous prime is 212021023309. The next prime is 212021023411. The reversal of 212021023399 is 993320120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212021023399 - 2⁷ = 212021023271 is a prime.

It is a super-3 number, since 3×212021023399³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021023309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010511699 + 106010511700.

It is an arithmetic number, because the mean of its divisors is an integer number (106010511700).

Almost surely, 2^212021023399 is an apocalyptic number.

212021023399 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021023399 is an equidigital number, since it uses as much as digits as its factorization.

212021023399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 212021023399 in words is "two hundred twelve billion, twenty-one million, twenty-three thousand, three hundred ninety-nine".