122100101220 has 96 divisors (see below), whose sum is σ = 343884828672. Its totient is φ = 32369634688.

The previous prime is 122100101213. The next prime is 122100101239. The reversal of 122100101220 is 22101001221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 122100101196 and 122100101205.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7929649 + ... + 7945031.

It is an arithmetic number, because the mean of its divisors is an integer number (3582133632).

Almost surely, 2^122100101220 is an apocalyptic number.

122100101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122100101220 is an abundant number, since it is smaller than the sum of its proper divisors (221784727452).

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

122100101220 is a wasteful number, since it uses less digits than its factorization.

122100101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16161 (or 16159 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 122100101220 its reverse (22101001221), we get a palindrome (144201102441).

Subtracting from 122100101220 its reverse (22101001221), we obtain a palindrome (99999099999).

The spelling of 122100101220 in words is "one hundred twenty-two billion, one hundred million, one hundred one thousand, two hundred twenty".