20122222021091 has 2 divisors, whose sum is σ = 20122222021092. Its totient is φ = 20122222021090.

The previous prime is 20122222021067. The next prime is 20122222021169. The reversal of 20122222021091 is 19012022222102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122222021091 is a prime.

It is a super-3 number, since 3×20122222021091³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20122222021091.

It is not a weakly prime, because it can be changed into another prime (20122222021001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061111010545 + 10061111010546.

It is an arithmetic number, because the mean of its divisors is an integer number (10061111010546).

Almost surely, 2^{20122222021091} is an apocalyptic number.

20122222021091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122222021091 is an equidigital number, since it uses as much as digits as its factorization.

20122222021091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 20122222021091 its reverse (19012022222102), we get a palindrome (39134244243193).

The spelling of 20122222021091 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty-two million, twenty-one thousand, ninety-one".