1021340012 has 96 divisors (see below), whose sum is σ = 2357268480. Its totient is φ = 375552000.

The previous prime is 1021339997. The next prime is 1021340017. The reversal of 1021340012 is 2100431201.

1021340012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1021340012² = 2086270840224320288, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1021340017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 390164 + ... + 392772.

It is an arithmetic number, because the mean of its divisors is an integer number (24554880).

Almost surely, 2^1021340012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021340012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1178634240).

1021340012 is an abundant number, since it is smaller than the sum of its proper divisors (1335928468).

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

1021340012 is a wasteful number, since it uses less digits than its factorization.

1021340012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703 (or 2701 counting only the distinct ones).

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

The square root of 1021340012 is about 31958.4106613580. The cubic root of 1021340012 is about 1007.0633292486.

Adding to 1021340012 its reverse (2100431201), we get a palindrome (3121771213).

The spelling of 1021340012 in words is "one billion, twenty-one million, three hundred forty thousand, twelve".