1021202112 has 112 divisors (see below), whose sum is σ = 3118908672. Its totient is φ = 288844800.

The previous prime is 1021202081. The next prime is 1021202113. The reversal of 1021202112 is 2112021201.

It is a tau number, because it is divible by the number of its divisors (112).

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

It is not an unprimeable number, because it can be changed into a prime (1021202113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131983 + ... + 139505.

Almost surely, 2^1021202112 is an apocalyptic number.

1021202112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559454336).

1021202112 is an abundant number, since it is smaller than the sum of its proper divisors (2097706560).

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

1021202112 is a wasteful number, since it uses less digits than its factorization.

1021202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7646 (or 7636 counting only the distinct ones).

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

The square root of 1021202112 is about 31956.2530970075. The cubic root of 1021202112 is about 1007.0180030817.

Adding to 1021202112 its reverse (2112021201), we get a palindrome (3133223313).

The spelling of 1021202112 in words is "one billion, twenty-one million, two hundred two thousand, one hundred twelve".