121112202220 has 24 divisors (see below), whose sum is σ = 254664681264. Its totient is φ = 48382203456.

The previous prime is 121112202193. The next prime is 121112202221. The reversal of 121112202220 is 22202211121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121112202194 and 121112202203.

It is not an unprimeable number, because it can be changed into a prime (121112202221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3901494 + ... + 3932413.

It is an arithmetic number, because the mean of its divisors is an integer number (10611028386).

Almost surely, 2^121112202220 is an apocalyptic number.

121112202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112202220 is an abundant number, since it is smaller than the sum of its proper divisors (133552479044).

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

121112202220 is a wasteful number, since it uses less digits than its factorization.

121112202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7834689 (or 7834687 counting only the distinct ones).

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

Adding to 121112202220 its reverse (22202211121), we get a palindrome (143314413341).

The spelling of 121112202220 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred two thousand, two hundred twenty".