122120121220 has 24 divisors (see below), whose sum is σ = 256473278208. Its totient is φ = 48844044000.

The previous prime is 122120121199. The next prime is 122120121241. The reversal of 122120121220 is 22121021221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122120121199) and next prime (122120121241).

It is a junction number, because it is equal to n+sod(n) for n = 122120121194 and 122120121203.

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, 6195 + ... + 494245.

It is an arithmetic number, because the mean of its divisors is an integer number (10686386592).

Almost surely, 2^122120121220 is an apocalyptic number.

122120121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122120121220 is an abundant number, since it is smaller than the sum of its proper divisors (134353156988).

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

122120121220 is a wasteful number, since it uses less digits than its factorization.

122120121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500571 (or 500569 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122120121220 its reverse (22121021221), we get a palindrome (144241142441).

Subtracting from 122120121220 its reverse (22121021221), we obtain a palindrome (99999099999).

It can be divided in two parts, 1221201 and 21220, that added together give a palindrome (1242421).

The spelling of 122120121220 in words is "one hundred twenty-two billion, one hundred twenty million, one hundred twenty-one thousand, two hundred twenty".