122690217 has 8 divisors (see below), whose sum is σ = 176170624. Its totient is φ = 75501648.

The previous prime is 122690209. The next prime is 122690231. The reversal of 122690217 is 712096221.

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

It is not a de Polignac number, because 122690217 - 2³ = 122690209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122690917) 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, 1572913 + ... + 1572990.

It is an arithmetic number, because the mean of its divisors is an integer number (22021328).

Almost surely, 2^122690217 is an apocalyptic number.

It is an amenable number.

122690217 is a deficient number, since it is larger than the sum of its proper divisors (53480407).

122690217 is a wasteful number, since it uses less digits than its factorization.

122690217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145919.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 122690217 is about 11076.5616054803. The cubic root of 122690217 is about 496.9011229334.

The spelling of 122690217 in words is "one hundred twenty-two million, six hundred ninety thousand, two hundred seventeen".