122001100100220 has 96 divisors (see below), whose sum is σ = 372666701627136. Its totient is φ = 29575326182400.

The previous prime is 122001100100171. The next prime is 122001100100227. The reversal of 122001100100220 is 22001001100221.

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 = 122001100100196 and 122001100100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122001100100227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26079300 + ... + 30399540.

It is an arithmetic number, because the mean of its divisors is an integer number (3881944808616).

Almost surely, 2^{122001100100220} is an apocalyptic number.

122001100100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122001100100220 is an abundant number, since it is smaller than the sum of its proper divisors (250665601526916).

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

122001100100220 is a wasteful number, since it uses less digits than its factorization.

122001100100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4363051 (or 4363049 counting only the distinct ones).

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

Adding to 122001100100220 its reverse (22001001100221), we get a palindrome (144002101200441).

The spelling of 122001100100220 in words is "one hundred twenty-two trillion, one billion, one hundred million, one hundred thousand, two hundred twenty".