121975222 has 4 divisors (see below), whose sum is σ = 182962836. Its totient is φ = 60987610.

The previous prime is 121975213. The next prime is 121975237. The reversal of 121975222 is 222579121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222579121 = 89 ⋅2500889.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30493804 + ... + 30493807.

It is an arithmetic number, because the mean of its divisors is an integer number (45740709).

Almost surely, 2^121975222 is an apocalyptic number.

121975222 is a deficient number, since it is larger than the sum of its proper divisors (60987614).

121975222 is an equidigital number, since it uses as much as digits as its factorization.

121975222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60987613.

The product of its digits is 5040, while the sum is 31.

The square root of 121975222 is about 11044.2393128726. The cubic root of 121975222 is about 495.9339873776.

The spelling of 121975222 in words is "one hundred twenty-one million, nine hundred seventy-five thousand, two hundred twenty-two".