121950319 has 2 divisors, whose sum is σ = 121950320. Its totient is φ = 121950318.

The previous prime is 121950317. The next prime is 121950337. The reversal of 121950319 is 913059121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121950319 - 2¹ = 121950317 is a prime.

It is a super-2 number, since 2×121950319² = 29743760608403522, which contains 22 as substring.

Together with 121950317, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121950317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60975159 + 60975160.

It is an arithmetic number, because the mean of its divisors is an integer number (60975160).

Almost surely, 2^121950319 is an apocalyptic number.

121950319 is a deficient number, since it is larger than the sum of its proper divisors (1).

121950319 is an equidigital number, since it uses as much as digits as its factorization.

121950319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 121950319 is about 11043.1118349856. Note that the first 3 decimals coincide. The cubic root of 121950319 is about 495.9002343895.

The spelling of 121950319 in words is "one hundred twenty-one million, nine hundred fifty thousand, three hundred nineteen".