121100222210 has 32 divisors (see below), whose sum is σ = 237831152832. Its totient is φ = 44030082880.

The previous prime is 121100222183. The next prime is 121100222213. The reversal of 121100222210 is 12222001121.

It is a super-2 number, since 2×121100222210² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121100222213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721937 + ... + 873723.

It is an arithmetic number, because the mean of its divisors is an integer number (7432223526).

Almost surely, 2^121100222210 is an apocalyptic number.

121100222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121100222210 is a deficient number, since it is larger than the sum of its proper divisors (116730930622).

121100222210 is a wasteful number, since it uses less digits than its factorization.

121100222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159058.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121100222210 its reverse (12222001121), we get a palindrome (133322223331).

Subtracting from 121100222210 its reverse (12222001121), we obtain a square (108878221089 = 329967²).

The spelling of 121100222210 in words is "one hundred twenty-one billion, one hundred million, two hundred twenty-two thousand, two hundred ten".