121122220220210 has 32 divisors (see below), whose sum is σ = 237854660239872. Its totient is φ = 44041728129280.

The previous prime is 121122220220179. The next prime is 121122220220213. The reversal of 121122220220210 is 12022022221121.

It is not an unprimeable number, because it can be changed into a prime (121122220220213) 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, 32152199 + ... + 35721258.

It is an arithmetic number, because the mean of its divisors is an integer number (7432958132496).

Almost surely, 2^{121122220220210} is an apocalyptic number.

121122220220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121122220220210 is a deficient number, since it is larger than the sum of its proper divisors (116732440019662).

121122220220210 is a wasteful number, since it uses less digits than its factorization.

121122220220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67889698.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121122220220210 its reverse (12022022221121), we get a palindrome (133144242441331).

The spelling of 121122220220210 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty million, two hundred twenty thousand, two hundred ten".