121650253 has 2 divisors, whose sum is σ = 121650254. Its totient is φ = 121650252.

The previous prime is 121650251. The next prime is 121650257. The reversal of 121650253 is 352056121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95004009 + 26646244 = 9747^2 + 5162^2 .

It is a cyclic number.

It is not a de Polignac number, because 121650253 - 2¹ = 121650251 is a prime.

Together with 121650251, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121650251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60825126 + 60825127.

It is an arithmetic number, because the mean of its divisors is an integer number (60825127).

Almost surely, 2^121650253 is an apocalyptic number.

It is an amenable number.

121650253 is a deficient number, since it is larger than the sum of its proper divisors (1).

121650253 is an equidigital number, since it uses as much as digits as its factorization.

121650253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 121650253 is about 11029.5173511809. The cubic root of 121650253 is about 495.4931696817.

The spelling of 121650253 in words is "one hundred twenty-one million, six hundred fifty thousand, two hundred fifty-three".