121122221210 has 32 divisors (see below), whose sum is σ = 220906707840. Its totient is φ = 47808773568.

The previous prime is 121122221201. The next prime is 121122221257. The reversal of 121122221210 is 12122221121.

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, 622451 + ... + 793529.

It is an arithmetic number, because the mean of its divisors is an integer number (6903334620).

Almost surely, 2^121122221210 is an apocalyptic number.

121122221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121122221210 is a deficient number, since it is larger than the sum of its proper divisors (99784486630).

121122221210 is a wasteful number, since it uses less digits than its factorization.

121122221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172022.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121122221210 its reverse (12122221121), we get a palindrome (133244442331).

It can be divided in two parts, 12112 and 2221210, that added together give a palindrome (2233322).

The spelling of 121122221210 in words is "one hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred ten".