121201397 has 2 divisors, whose sum is σ = 121201398. Its totient is φ = 121201396.

The previous prime is 121201393. The next prime is 121201417. The reversal of 121201397 is 793102121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119224561 + 1976836 = 10919^2 + 1406^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201397 - 2² = 121201393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121201393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600698 + 60600699.

It is an arithmetic number, because the mean of its divisors is an integer number (60600699).

Almost surely, 2^121201397 is an apocalyptic number.

It is an amenable number.

121201397 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201397 is an equidigital number, since it uses as much as digits as its factorization.

121201397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 121201397 is about 11009.1506030211. The cubic root of 121201397 is about 494.8830074156.

The spelling of 121201397 in words is "one hundred twenty-one million, two hundred one thousand, three hundred ninety-seven".