20212213111291 has 2 divisors, whose sum is σ = 20212213111292. Its totient is φ = 20212213111290.

The previous prime is 20212213111261. The next prime is 20212213111331. The reversal of 20212213111291 is 19211131221202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212213111291 - 2³¹ = 20210065627643 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212213111241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106106555645 + 10106106555646.

It is an arithmetic number, because the mean of its divisors is an integer number (10106106555646).

Almost surely, 2^{20212213111291} is an apocalyptic number.

20212213111291 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212213111291 is an equidigital number, since it uses as much as digits as its factorization.

20212213111291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

Adding to 20212213111291 its reverse (19211131221202), we get a palindrome (39423344332493).

The spelling of 20212213111291 in words is "twenty trillion, two hundred twelve billion, two hundred thirteen million, one hundred eleven thousand, two hundred ninety-one".