121222232210 has 128 divisors (see below), whose sum is σ = 232150302720. Its totient is φ = 45522777600.

The previous prime is 121222232171. The next prime is 121222232227. The reversal of 121222232210 is 12232222121.

It is a super-2 number, since 2×121222232210² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 447314375 + ... + 447314645.

It is an arithmetic number, because the mean of its divisors is an integer number (1813674240).

Almost surely, 2^121222232210 is an apocalyptic number.

121222232210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121222232210 is a deficient number, since it is larger than the sum of its proper divisors (110928070510).

121222232210 is a wasteful number, since it uses less digits than its factorization.

121222232210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 121222232210 its reverse (12232222121), we get a palindrome (133454454331).

The spelling of 121222232210 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred thirty-two thousand, two hundred ten".