121494901 has 12 divisors (see below), whose sum is σ = 138559680. Its totient is φ = 105642680.

The previous prime is 121494899. The next prime is 121494907. The reversal of 121494901 is 109494121.

It is not a de Polignac number, because 121494901 - 2¹ = 121494899 is a prime.

It is a super-2 number, since 2×121494901² = 29522021937999602, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121494907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4621 + ... + 16258.

It is an arithmetic number, because the mean of its divisors is an integer number (11546640).

Almost surely, 2^121494901 is an apocalyptic number.

121494901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121494901 is a deficient number, since it is larger than the sum of its proper divisors (17064779).

121494901 is a wasteful number, since it uses less digits than its factorization.

121494901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20936 (or 20913 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 121494901 is about 11022.4725447605. The cubic root of 121494901 is about 495.2821586253.

The spelling of 121494901 in words is "one hundred twenty-one million, four hundred ninety-four thousand, nine hundred one".