1020000012 has 24 divisors (see below), whose sum is σ = 2386129200. Its totient is φ = 339124416.

The previous prime is 1020000011. The next prime is 1020000013. The reversal of 1020000012 is 2100000201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1020000011) and next prime (1020000013).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is not an unprimeable number, because it can be changed into a prime (1020000011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104587 + ... + 113922.

It is an arithmetic number, because the mean of its divisors is an integer number (99422050).

Almost surely, 2^1020000012 is an apocalyptic number.

1020000012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1020000012 is an abundant number, since it is smaller than the sum of its proper divisors (1366129188).

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

1020000012 is a wasteful number, since it uses less digits than its factorization.

1020000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218905 (or 218903 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1020000012 is about 31937.4390332099. The cubic root of 1020000012 is about 1006.6227135077.

Adding to 1020000012 its reverse (2100000201), we get a palindrome (3120000213).

The spelling of 1020000012 in words is "one billion, twenty million, twelve", and thus it is an aban number and an uban number.