122220949987 has 2 divisors, whose sum is σ = 122220949988. Its totient is φ = 122220949986.

The previous prime is 122220949943. The next prime is 122220950029. The reversal of 122220949987 is 789949022221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122220949987 - 2²³ = 122212561379 is a prime.

It is not a weakly prime, because it can be changed into another prime (122220949687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110474993 + 61110474994.

It is an arithmetic number, because the mean of its divisors is an integer number (61110474994).

Almost surely, 2^122220949987 is an apocalyptic number.

122220949987 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220949987 is an equidigital number, since it uses as much as digits as its factorization.

122220949987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 122220949987 in words is "one hundred twenty-two billion, two hundred twenty million, nine hundred forty-nine thousand, nine hundred eighty-seven".