1220022112 has 48 divisors (see below), whose sum is σ = 2564956800. Its totient is φ = 569963520.

The previous prime is 1220022109. The next prime is 1220022121. The reversal of 1220022112 is 2112200221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220022092 and 1220022101.

It is a congruent number.

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, 7564 + ... + 49972.

It is an arithmetic number, because the mean of its divisors is an integer number (53436600).

Almost surely, 2^1220022112 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 1220022112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1282478400).

1220022112 is an abundant number, since it is smaller than the sum of its proper divisors (1344934688).

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

1220022112 is a wasteful number, since it uses less digits than its factorization.

1220022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42479 (or 42471 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1220022112 is about 34928.8149240709. The cubic root of 1220022112 is about 1068.5361856644.

Adding to 1220022112 its reverse (2112200221), we get a palindrome (3332222333).

The spelling of 1220022112 in words is "one billion, two hundred twenty million, twenty-two thousand, one hundred twelve".