1021444212 has 48 divisors (see below), whose sum is σ = 2431598400. Its totient is φ = 333645312.

The previous prime is 1021444183. The next prime is 1021444213. The reversal of 1021444212 is 2124441201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021444213) 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, 155164 + ... + 161612.

It is an arithmetic number, because the mean of its divisors is an integer number (50658300).

Almost surely, 2^1021444212 is an apocalyptic number.

1021444212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021444212 is an abundant number, since it is smaller than the sum of its proper divisors (1410154188).

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

1021444212 is a wasteful number, since it uses less digits than its factorization.

1021444212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720 (or 6718 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1021444212 is about 31960.0408635534. The cubic root of 1021444212 is about 1007.0975759015.

Adding to 1021444212 its reverse (2124441201), we get a palindrome (3145885413).

The spelling of 1021444212 in words is "one billion, twenty-one million, four hundred forty-four thousand, two hundred twelve".