1220022201112 has 128 divisors (see below), whose sum is σ = 2722035456000. Its totient is φ = 505321943040.

The previous prime is 1220022200993. The next prime is 1220022201113. The reversal of 1220022201112 is 2111022200221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220022201113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136631464 + ... + 136640392.

It is an arithmetic number, because the mean of its divisors is an integer number (21265902000).

Almost surely, 2^{1220022201112} 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 1220022201112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1361017728000).

1220022201112 is an abundant number, since it is smaller than the sum of its proper divisors (1502013254888).

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

1220022201112 is a wasteful number, since it uses less digits than its factorization.

1220022201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10481 (or 10477 counting only the distinct ones).

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

Adding to 1220022201112 its reverse (2111022200221), we get a palindrome (3331044401333).

The spelling of 1220022201112 in words is "one trillion, two hundred twenty billion, twenty-two million, two hundred one thousand, one hundred twelve".