2021362032491 has 2 divisors, whose sum is σ = 2021362032492. Its totient is φ = 2021362032490.

The previous prime is 2021362032463. The next prime is 2021362032511. The reversal of 2021362032491 is 1942302631202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021362032491 - 2²² = 2021357838187 is a prime.

It is a super-2 number, since 2×2021362032491² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2021362032401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010681016245 + 1010681016246.

It is an arithmetic number, because the mean of its divisors is an integer number (1010681016246).

Almost surely, 2^{2021362032491} is an apocalyptic number.

2021362032491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021362032491 is an equidigital number, since it uses as much as digits as its factorization.

2021362032491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

Adding to 2021362032491 its reverse (1942302631202), we get a palindrome (3963664663693).

The spelling of 2021362032491 in words is "two trillion, twenty-one billion, three hundred sixty-two million, thirty-two thousand, four hundred ninety-one".