122121122220210 has 16 divisors (see below), whose sum is σ = 293090693328576. Its totient is φ = 32565632592048.

The previous prime is 122121122220193. The next prime is 122121122220247. The reversal of 122121122220210 is 12022221121221.

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 7 ways as a sum of consecutive naturals, for example, 2035352036974 + ... + 2035352037033.

It is an arithmetic number, because the mean of its divisors is an integer number (18318168333036).

Almost surely, 2^{122121122220210} is an apocalyptic number.

122121122220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122121122220210 is an abundant number, since it is smaller than the sum of its proper divisors (170969571108366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122121122220210 is a wasteful number, since it uses less digits than its factorization.

122121122220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070704074017.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 122121122220210 its reverse (12022221121221), we get a palindrome (134143343341431).

The spelling of 122121122220210 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred ten".