1021013444 has 24 divisors (see below), whose sum is σ = 1968515136. Its totient is φ = 459500000.

The previous prime is 1021013419. The next prime is 1021013491. The reversal of 1021013444 is 4443101201.

It is a super-2 number, since 2×1021013444² = 2084936905657482272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110432 + ... + 119319.

It is an arithmetic number, because the mean of its divisors is an integer number (82021464).

Almost surely, 2^1021013444 is an apocalyptic number.

It is an amenable number.

1021013444 is a deficient number, since it is larger than the sum of its proper divisors (947501692).

1021013444 is a wasteful number, since it uses less digits than its factorization.

1021013444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229867 (or 229865 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1021013444 is about 31953.3009875349. The cubic root of 1021013444 is about 1006.9559834377.

Adding to 1021013444 its reverse (4443101201), we get a palindrome (5464114645).

The spelling of 1021013444 in words is "one billion, twenty-one million, thirteen thousand, four hundred forty-four".