121620371 has 2 divisors, whose sum is σ = 121620372. Its totient is φ = 121620370.

The previous prime is 121620353. The next prime is 121620379. The reversal of 121620371 is 173026121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121620371 - 2¹⁴ = 121603987 is a prime.

It is not a weakly prime, because it can be changed into another prime (121620379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60810185 + 60810186.

It is an arithmetic number, because the mean of its divisors is an integer number (60810186).

Almost surely, 2^121620371 is an apocalyptic number.

121620371 is a deficient number, since it is larger than the sum of its proper divisors (1).

121620371 is an equidigital number, since it uses as much as digits as its factorization.

121620371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 121620371 is about 11028.1626302843. The cubic root of 121620371 is about 495.4525956069.

Adding to 121620371 its reverse (173026121), we get a palindrome (294646492).

The spelling of 121620371 in words is "one hundred twenty-one million, six hundred twenty thousand, three hundred seventy-one".