1121220012220 has 48 divisors (see below), whose sum is σ = 2935557854208. Its totient is φ = 349471172160.

The previous prime is 1121220012193. The next prime is 1121220012277. The reversal of 1121220012220 is 222100221211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1121220012194 and 1121220012203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364030932 + ... + 364034011.

It is an arithmetic number, because the mean of its divisors is an integer number (61157455296).

Almost surely, 2^{1121220012220} is an apocalyptic number.

1121220012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121220012220 is an abundant number, since it is smaller than the sum of its proper divisors (1814337841988).

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

1121220012220 is a wasteful number, since it uses less digits than its factorization.

1121220012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728064970 (or 728064968 counting only the distinct ones).

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

Adding to 1121220012220 its reverse (222100221211), we get a palindrome (1343320233431).

The spelling of 1121220012220 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, twelve thousand, two hundred twenty".