121020901 has 2 divisors, whose sum is σ = 121020902. Its totient is φ = 121020900.

The previous prime is 121020883. The next prime is 121020919. The reversal of 121020901 is 109020121.

It is a balanced prime because it is at equal distance from previous prime (121020883) and next prime (121020919).

It can be written as a sum of positive squares in only one way, i.e., 71656225 + 49364676 = 8465^2 + 7026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121020901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510450 + 60510451.

It is an arithmetic number, because the mean of its divisors is an integer number (60510451).

Almost surely, 2^121020901 is an apocalyptic number.

It is an amenable number.

121020901 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020901 is an equidigital number, since it uses as much as digits as its factorization.

121020901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 121020901 is about 11000.9500044314. The cubic root of 121020901 is about 494.6372215210.

The spelling of 121020901 in words is "one hundred twenty-one million, twenty thousand, nine hundred one".