121663222 has 4 divisors (see below), whose sum is σ = 182494836. Its totient is φ = 60831610.

The previous prime is 121663183. The next prime is 121663229. The reversal of 121663222 is 222366121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222366121 = 241 ⋅922681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121663229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30415804 + ... + 30415807.

It is an arithmetic number, because the mean of its divisors is an integer number (45623709).

Almost surely, 2^121663222 is an apocalyptic number.

121663222 is a deficient number, since it is larger than the sum of its proper divisors (60831614).

121663222 is an equidigital number, since it uses as much as digits as its factorization.

121663222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60831613.

The product of its digits is 1728, while the sum is 25.

The square root of 121663222 is about 11030.1052578840. The cubic root of 121663222 is about 495.5107770504.

The spelling of 121663222 in words is "one hundred twenty-one million, six hundred sixty-three thousand, two hundred twenty-two".