121201051 has 2 divisors, whose sum is σ = 121201052. Its totient is φ = 121201050.

The previous prime is 121201037. The next prime is 121201117. The reversal of 121201051 is 150102121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121201051 - 2⁹ = 121200539 is a prime.

It is not a weakly prime, because it can be changed into another prime (121204051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600525 + 60600526.

It is an arithmetic number, because the mean of its divisors is an integer number (60600526).

Almost surely, 2^121201051 is an apocalyptic number.

121201051 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201051 is an equidigital number, since it uses as much as digits as its factorization.

121201051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 121201051 is about 11009.1348888094. The cubic root of 121201051 is about 494.8825364923.

Adding to 121201051 its reverse (150102121), we get a palindrome (271303172).

The spelling of 121201051 in words is "one hundred twenty-one million, two hundred one thousand, fifty-one".