20213200291 has 2 divisors, whose sum is σ = 20213200292. Its totient is φ = 20213200290.

The previous prime is 20213200283. The next prime is 20213200393. The reversal of 20213200291 is 19200231202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20213200291 - 2³ = 20213200283 is a prime.

It is not a weakly prime, because it can be changed into another prime (20213200211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106600145 + 10106600146.

It is an arithmetic number, because the mean of its divisors is an integer number (10106600146).

Almost surely, 2^20213200291 is an apocalyptic number.

20213200291 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213200291 is an equidigital number, since it uses as much as digits as its factorization.

20213200291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20213200291 its reverse (19200231202), we get a palindrome (39413431493).

The spelling of 20213200291 in words is "twenty billion, two hundred thirteen million, two hundred thousand, two hundred ninety-one".