122270661949 has 2 divisors, whose sum is σ = 122270661950. Its totient is φ = 122270661948.

The previous prime is 122270661901. The next prime is 122270662001. The reversal of 122270661949 is 949166072221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78293636100 + 43977025849 = 279810^2 + 209707^2 .

It is an emirp because it is prime and its reverse (949166072221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122270661949 - 2⁹ = 122270661437 is a prime.

It is a super-2 number, since 2×122270661949² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122270667949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61135330974 + 61135330975.

It is an arithmetic number, because the mean of its divisors is an integer number (61135330975).

Almost surely, 2^122270661949 is an apocalyptic number.

It is an amenable number.

122270661949 is a deficient number, since it is larger than the sum of its proper divisors (1).

122270661949 is an equidigital number, since it uses as much as digits as its factorization.

122270661949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 122270661949 in words is "one hundred twenty-two billion, two hundred seventy million, six hundred sixty-one thousand, nine hundred forty-nine".