121210951 has 2 divisors, whose sum is σ = 121210952. Its totient is φ = 121210950.

The previous prime is 121210949. The next prime is 121211017. The reversal of 121210951 is 159012121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121210951 - 2¹ = 121210949 is a prime.

Together with 121210949, 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 (121210351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605475 + 60605476.

It is an arithmetic number, because the mean of its divisors is an integer number (60605476).

Almost surely, 2^121210951 is an apocalyptic number.

121210951 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210951 is an equidigital number, since it uses as much as digits as its factorization.

121210951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 121210951 is about 11009.5845062382. The cubic root of 121210951 is about 494.8960105331.

The spelling of 121210951 in words is "one hundred twenty-one million, two hundred ten thousand, nine hundred fifty-one".