1020221112 has 32 divisors (see below), whose sum is σ = 2684793600. Its totient is φ = 322174944.

The previous prime is 1020221101. The next prime is 1020221113. The reversal of 1020221112 is 2111220201.

It is a super-2 number, since 2×1020221112² = 2081702234741033088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020221113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118208 + ... + 1119119.

It is an arithmetic number, because the mean of its divisors is an integer number (83899800).

Almost surely, 2^1020221112 is an apocalyptic number.

1020221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1020221112 is an abundant number, since it is smaller than the sum of its proper divisors (1664572488).

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

1020221112 is a wasteful number, since it uses less digits than its factorization.

1020221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237355 (or 2237351 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1020221112 is about 31940.9003003985. The cubic root of 1020221112 is about 1006.6954416776.

Adding to 1020221112 its reverse (2111220201), we get a palindrome (3131441313).

The spelling of 1020221112 in words is "one billion, twenty million, two hundred twenty-one thousand, one hundred twelve".