1021403012 has 24 divisors (see below), whose sum is σ = 2045656704. Its totient is φ = 437133312.

The previous prime is 1021403003. The next prime is 1021403023. The reversal of 1021403012 is 2103041201.

It is a super-2 number, since 2×1021403012² = 2086528225845344288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 4733 + ... + 45444.

It is an arithmetic number, because the mean of its divisors is an integer number (85235696).

Almost surely, 2^1021403012 is an apocalyptic number.

It is an amenable number.

1021403012 is an abundant number, since it is smaller than the sum of its proper divisors (1024253692).

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

1021403012 is a wasteful number, since it uses less digits than its factorization.

1021403012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50915 (or 50913 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1021403012 is about 31959.3963021832. The cubic root of 1021403012 is about 1007.0840352768.

Adding to 1021403012 its reverse (2103041201), we get a palindrome (3124444213).

The spelling of 1021403012 in words is "one billion, twenty-one million, four hundred three thousand, twelve".