121552222 has 32 divisors (see below), whose sum is σ = 202577760. Its totient is φ = 54241920.

The previous prime is 121552183. The next prime is 121552241. The reversal of 121552222 is 222255121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 121552193 and 121552202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414708 + ... + 415000.

It is an arithmetic number, because the mean of its divisors is an integer number (6330555).

Almost surely, 2^121552222 is an apocalyptic number.

121552222 is a deficient number, since it is larger than the sum of its proper divisors (81025538).

121552222 is a wasteful number, since it uses less digits than its factorization.

121552222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588.

The product of its digits is 800, while the sum is 22.

The square root of 121552222 is about 11025.0724260660. The cubic root of 121552222 is about 495.3600373532.

The spelling of 121552222 in words is "one hundred twenty-one million, five hundred fifty-two thousand, two hundred twenty-two".