22121202011819 has 2 divisors, whose sum is σ = 22121202011820. Its totient is φ = 22121202011818.

The previous prime is 22121202011807. The next prime is 22121202011891. The reversal of 22121202011819 is 91811020212122.

Together with next prime (22121202011891) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22121202011819 - 2⁸ = 22121202011563 is a prime.

It is a super-2 number, since 2×22121202011819² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22121202041819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060601005909 + 11060601005910.

It is an arithmetic number, because the mean of its divisors is an integer number (11060601005910).

Almost surely, 2^{22121202011819} is an apocalyptic number.

22121202011819 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121202011819 is an equidigital number, since it uses as much as digits as its factorization.

22121202011819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 32.

The spelling of 22121202011819 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred two million, eleven thousand, eight hundred nineteen".