122112100021999 has 2 divisors, whose sum is σ = 122112100022000. Its totient is φ = 122112100021998.

The previous prime is 122112100021943. The next prime is 122112100022039. The reversal of 122112100021999 is 999120001211221.

It is an a-pointer prime, because the next prime (122112100022039) can be obtained adding 122112100021999 to its sum of digits (40).

It is a strong prime.

It is an emirp because it is prime and its reverse (999120001211221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122112100021999 - 2⁷ = 122112100021871 is a prime.

It is a super-2 number, since 2×122112100021999² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122112100021199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61056050010999 + 61056050011000.

It is an arithmetic number, because the mean of its divisors is an integer number (61056050011000).

Almost surely, 2^{122112100021999} is an apocalyptic number.

122112100021999 is a deficient number, since it is larger than the sum of its proper divisors (1).

122112100021999 is an equidigital number, since it uses as much as digits as its factorization.

122112100021999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 122112100021999 in words is "one hundred twenty-two trillion, one hundred twelve billion, one hundred million, twenty-one thousand, nine hundred ninety-nine".