121501693 has 2 divisors, whose sum is σ = 121501694. Its totient is φ = 121501692.

The previous prime is 121501657. The next prime is 121501729. The reversal of 121501693 is 396105121.

It is a balanced prime because it is at equal distance from previous prime (121501657) and next prime (121501729).

It can be written as a sum of positive squares in only one way, i.e., 96471684 + 25030009 = 9822^2 + 5003^2 .

It is a cyclic number.

It is not a de Polignac number, because 121501693 - 2¹⁷ = 121370621 is a prime.

It is a super-2 number, since 2×121501693² = 29525322803732498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121501613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60750846 + 60750847.

It is an arithmetic number, because the mean of its divisors is an integer number (60750847).

Almost surely, 2^121501693 is an apocalyptic number.

It is an amenable number.

121501693 is a deficient number, since it is larger than the sum of its proper divisors (1).

121501693 is an equidigital number, since it uses as much as digits as its factorization.

121501693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 121501693 is about 11022.7806382963. The cubic root of 121501693 is about 495.2913878020.

The spelling of 121501693 in words is "one hundred twenty-one million, five hundred one thousand, six hundred ninety-three".