122101220 has 24 divisors (see below), whose sum is σ = 269908800. Its totient is φ = 46269792.

The previous prime is 122101211. The next prime is 122101249. The reversal of 122101220 is 22101221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160280 + ... + 161039.

It is an arithmetic number, because the mean of its divisors is an integer number (11246200).

Almost surely, 2^122101220 is an apocalyptic number.

122101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122101220 is an abundant number, since it is smaller than the sum of its proper divisors (147807580).

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

122101220 is a wasteful number, since it uses less digits than its factorization.

122101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321347 (or 321345 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 122101220 is about 11049.9420812962. The cubic root of 122101220 is about 496.1046919574.

Adding to 122101220 its reverse (22101221), we get a palindrome (144202441).

Subtracting from 122101220 its reverse (22101221), we obtain a palindrome (99999999).

The spelling of 122101220 in words is "one hundred twenty-two million, one hundred one thousand, two hundred twenty".