121969001 has 16 divisors (see below), whose sum is σ = 152343168. Its totient is φ = 94867200.

The previous prime is 121968967. The next prime is 121969007. The reversal of 121969001 is 100969121.

It is a cyclic number.

It is not a de Polignac number, because 121969001 - 2⁶ = 121968937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121969007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55361 + ... + 57521.

It is an arithmetic number, because the mean of its divisors is an integer number (9521448).

Almost surely, 2^121969001 is an apocalyptic number.

121969001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121969001 is a deficient number, since it is larger than the sum of its proper divisors (30374167).

121969001 is a wasteful number, since it uses less digits than its factorization.

121969001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 121969001 is about 11043.9576692416. The cubic root of 121969001 is about 495.9255559991.

The spelling of 121969001 in words is "one hundred twenty-one million, nine hundred sixty-nine thousand, one".