20220211021391 has 2 divisors, whose sum is σ = 20220211021392. Its totient is φ = 20220211021390.

The previous prime is 20220211021369. The next prime is 20220211021457. The reversal of 20220211021391 is 19312011202202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20220211021391 - 2⁴² = 15822164510287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20220211021391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220211011391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110105510695 + 10110105510696.

It is an arithmetic number, because the mean of its divisors is an integer number (10110105510696).

Almost surely, 2^{20220211021391} is an apocalyptic number.

20220211021391 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220211021391 is an equidigital number, since it uses as much as digits as its factorization.

20220211021391 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 26.

Adding to 20220211021391 its reverse (19312011202202), we get a palindrome (39532222223593).

The spelling of 20220211021391 in words is "twenty trillion, two hundred twenty billion, two hundred eleven million, twenty-one thousand, three hundred ninety-one".