20214412391 has 2 divisors, whose sum is σ = 20214412392. Its totient is φ = 20214412390.

The previous prime is 20214412367. The next prime is 20214412429. The reversal of 20214412391 is 19321441202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20214412391 - 2²² = 20210218087 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20214412301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107206195 + 10107206196.

It is an arithmetic number, because the mean of its divisors is an integer number (10107206196).

Almost surely, 2^20214412391 is an apocalyptic number.

20214412391 is a deficient number, since it is larger than the sum of its proper divisors (1).

20214412391 is an equidigital number, since it uses as much as digits as its factorization.

20214412391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 20214412391 its reverse (19321441202), we get a palindrome (39535853593).

The spelling of 20214412391 in words is "twenty billion, two hundred fourteen million, four hundred twelve thousand, three hundred ninety-one".