121154101 has 2 divisors, whose sum is σ = 121154102. Its totient is φ = 121154100.

The previous prime is 121154071. The next prime is 121154123. The reversal of 121154101 is 101451121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112148100 + 9006001 = 10590^2 + 3001^2 .

It is a cyclic number.

It is not a de Polignac number, because 121154101 - 2⁷ = 121153973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121154161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60577050 + 60577051.

It is an arithmetic number, because the mean of its divisors is an integer number (60577051).

Almost surely, 2^121154101 is an apocalyptic number.

It is an amenable number.

121154101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121154101 is an equidigital number, since it uses as much as digits as its factorization.

121154101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 121154101 is about 11007.0023621329. The cubic root of 121154101 is about 494.8186268817.

The spelling of 121154101 in words is "one hundred twenty-one million, one hundred fifty-four thousand, one hundred one".