121299851 has 2 divisors, whose sum is σ = 121299852. Its totient is φ = 121299850.

The previous prime is 121299847. The next prime is 121299883. The reversal of 121299851 is 158992121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121299851 - 2² = 121299847 is a prime.

It is not a weakly prime, because it can be changed into another prime (121299751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60649925 + 60649926.

It is an arithmetic number, because the mean of its divisors is an integer number (60649926).

Almost surely, 2^121299851 is an apocalyptic number.

121299851 is a deficient number, since it is larger than the sum of its proper divisors (1).

121299851 is an equidigital number, since it uses as much as digits as its factorization.

121299851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 38.

The square root of 121299851 is about 11013.6211574577. The cubic root of 121299851 is about 495.0169718359.

The spelling of 121299851 in words is "one hundred twenty-one million, two hundred ninety-nine thousand, eight hundred fifty-one".