149120950921 has 2 divisors, whose sum is σ = 149120950922. Its totient is φ = 149120950920.

The previous prime is 149120950889. The next prime is 149120950963. The reversal of 149120950921 is 129059021941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135276840000 + 13844110921 = 367800^2 + 117661^2 .

It is a cyclic number.

It is not a de Polignac number, because 149120950921 - 2⁵ = 149120950889 is a prime.

It is not a weakly prime, because it can be changed into another prime (149120950981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74560475460 + 74560475461.

It is an arithmetic number, because the mean of its divisors is an integer number (74560475461).

Almost surely, 2^149120950921 is an apocalyptic number.

It is an amenable number.

149120950921 is a deficient number, since it is larger than the sum of its proper divisors (1).

149120950921 is an equidigital number, since it uses as much as digits as its factorization.

149120950921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 149120950921 in words is "one hundred forty-nine billion, one hundred twenty million, nine hundred fifty thousand, nine hundred twenty-one".