1021012012 has 24 divisors (see below), whose sum is σ = 1837184832. Its totient is φ = 496195200.

The previous prime is 1021011991. The next prime is 1021012033. The reversal of 1021012012 is 2102101201.

It is an interprime number because it is at equal distance from previous prime (1021011991) and next prime (1021012033).

It is a self number, because there is not a number n which added to its sum of digits gives 1021012012.

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, 32958 + ... + 55930.

It is an arithmetic number, because the mean of its divisors is an integer number (76549368).

Almost surely, 2^1021012012 is an apocalyptic number.

It is an amenable number.

1021012012 is a deficient number, since it is larger than the sum of its proper divisors (816172820).

1021012012 is a wasteful number, since it uses less digits than its factorization.

1021012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23289 (or 23287 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1021012012 is about 31953.2785798265. The cubic root of 1021012012 is about 1006.9555126761.

Adding to 1021012012 its reverse (2102101201), we get a palindrome (3123113213).

It can be divided in two parts, 102101201 and 2, that multiplied together give a palindrome (204202402).

The spelling of 1021012012 in words is "one billion, twenty-one million, twelve thousand, twelve".