7801112220 has 192 divisors, whose sum is σ = 24292058112. Its totient is φ = 1854720000.

The previous prime is 7801112161. The next prime is 7801112251. The reversal of 7801112220 is 222111087.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12979920 + ... + 12980520.

It is an arithmetic number, because the mean of its divisors is an integer number (126521136).

Almost surely, 2^7801112220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7801112220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12146029056).

7801112220 is an abundant number, since it is smaller than the sum of its proper divisors (16490945892).

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

7801112220 is a wasteful number, since it uses less digits than its factorization.

7801112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 970 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 7801112220 is about 88323.9051446436. The cubic root of 7801112220 is about 1983.2867408650.

It can be divided in two parts, 7801 and 112220, that added together give a palindrome (120021).

The spelling of 7801112220 in words is "seven billion, eight hundred one million, one hundred twelve thousand, two hundred twenty".