122150650991 has 2 divisors, whose sum is σ = 122150650992. Its totient is φ = 122150650990.

The previous prime is 122150650981. The next prime is 122150651057. The reversal of 122150650991 is 199056051221.

It is a weak prime.

It is an emirp because it is prime and its reverse (199056051221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122150650991 - 2³⁰ = 121076909167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122150650961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61075325495 + 61075325496.

It is an arithmetic number, because the mean of its divisors is an integer number (61075325496).

Almost surely, 2^122150650991 is an apocalyptic number.

122150650991 is a deficient number, since it is larger than the sum of its proper divisors (1).

122150650991 is an equidigital number, since it uses as much as digits as its factorization.

122150650991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 41.

The spelling of 122150650991 in words is "one hundred twenty-two billion, one hundred fifty million, six hundred fifty thousand, nine hundred ninety-one".