121927651 has 2 divisors, whose sum is σ = 121927652. Its totient is φ = 121927650.

The previous prime is 121927649. The next prime is 121927657. The reversal of 121927651 is 156729121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121927651 - 2¹ = 121927649 is a prime.

Together with 121927649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121927657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60963825 + 60963826.

It is an arithmetic number, because the mean of its divisors is an integer number (60963826).

Almost surely, 2^121927651 is an apocalyptic number.

121927651 is a deficient number, since it is larger than the sum of its proper divisors (1).

121927651 is an equidigital number, since it uses as much as digits as its factorization.

121927651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 34.

The square root of 121927651 is about 11042.0854461465. The cubic root of 121927651 is about 495.8695066768.

The spelling of 121927651 in words is "one hundred twenty-one million, nine hundred twenty-seven thousand, six hundred fifty-one".