22121001331213 has 2 divisors, whose sum is σ = 22121001331214. Its totient is φ = 22121001331212.

The previous prime is 22121001331159. The next prime is 22121001331249. The reversal of 22121001331213 is 31213310012122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14424826788009 + 7696174543204 = 3798003^2 + 2774198^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121001331213 - 2¹³ = 22121001323021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121001331313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060500665606 + 11060500665607.

It is an arithmetic number, because the mean of its divisors is an integer number (11060500665607).

Almost surely, 2^{22121001331213} is an apocalyptic number.

It is an amenable number.

22121001331213 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121001331213 is an equidigital number, since it uses as much as digits as its factorization.

22121001331213 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 22121001331213 its reverse (31213310012122), we get a palindrome (53334311343335).

The spelling of 22121001331213 in words is "twenty-two trillion, one hundred twenty-one billion, one million, three hundred thirty-one thousand, two hundred thirteen".