121122222191819 has 2 divisors, whose sum is σ = 121122222191820. Its totient is φ = 121122222191818.

The previous prime is 121122222191813. The next prime is 121122222191863. The reversal of 121122222191819 is 918191222221121.

It is an a-pointer prime, because the next prime (121122222191863) can be obtained adding 121122222191819 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121122222191819 - 2⁴⁴ = 103530036147403 is a prime.

It is a super-2 number, since 2×121122222191819² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121122222191819.

It is not a weakly prime, because it can be changed into another prime (121122222191813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561111095909 + 60561111095910.

It is an arithmetic number, because the mean of its divisors is an integer number (60561111095910).

Almost surely, 2^{121122222191819} is an apocalyptic number.

121122222191819 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122222191819 is an equidigital number, since it uses as much as digits as its factorization.

121122222191819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 44.

The spelling of 121122222191819 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred ninety-one thousand, eight hundred nineteen".