121108951 has 2 divisors, whose sum is σ = 121108952. Its totient is φ = 121108950.

The previous prime is 121108931. The next prime is 121108963. The reversal of 121108951 is 159801121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121108951 - 2⁹ = 121108439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121108921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60554475 + 60554476.

It is an arithmetic number, because the mean of its divisors is an integer number (60554476).

Almost surely, 2^121108951 is an apocalyptic number.

121108951 is a deficient number, since it is larger than the sum of its proper divisors (1).

121108951 is an equidigital number, since it uses as much as digits as its factorization.

121108951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 28.

The square root of 121108951 is about 11004.9512038900. The cubic root of 121108951 is about 494.7571519044.

The spelling of 121108951 in words is "one hundred twenty-one million, one hundred eight thousand, nine hundred fifty-one".