1112020221221 has 36 divisors (see below), whose sum is σ = 1401622983072. Its totient is φ = 879282147744.

The previous prime is 1112020221217. The next prime is 1112020221223. The reversal of 1112020221221 is 1221220202111.

It is not a de Polignac number, because 1112020221221 - 2² = 1112020221217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1112020221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112020221223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13265786 + ... + 13349348.

It is an arithmetic number, because the mean of its divisors is an integer number (38933971752).

Almost surely, 2^{1112020221221} is an apocalyptic number.

It is an amenable number.

1112020221221 is a deficient number, since it is larger than the sum of its proper divisors (289602761851).

1112020221221 is a wasteful number, since it uses less digits than its factorization.

1112020221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85210 (or 85190 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1112020221221 its reverse (1221220202111), we get a palindrome (2333240423332).

The spelling of 1112020221221 in words is "one trillion, one hundred twelve billion, twenty million, two hundred twenty-one thousand, two hundred twenty-one".