122121091 has 8 divisors (see below), whose sum is σ = 125092800. Its totient is φ = 119179560.

The previous prime is 122121089. The next prime is 122121107. The reversal of 122121091 is 190121221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122121091 - 2¹ = 122121089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122121061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756 + ... + 15646.

It is an arithmetic number, because the mean of its divisors is an integer number (15636600).

Almost surely, 2^122121091 is an apocalyptic number.

122121091 is a deficient number, since it is larger than the sum of its proper divisors (2971709).

122121091 is a wasteful number, since it uses less digits than its factorization.

122121091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15089.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 122121091 is about 11050.8411897014. The cubic root of 122121091 is about 496.1316028586.

The spelling of 122121091 in words is "one hundred twenty-two million, one hundred twenty-one thousand, ninety-one".