1021120012 has 24 divisors (see below), whose sum is σ = 1976873472. Its totient is φ = 457606800.

The previous prime is 1021119973. The next prime is 1021120013. The reversal of 1021120012 is 2100211201.

1021120012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1021120013) 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, 160308 + ... + 166555.

It is an arithmetic number, because the mean of its divisors is an integer number (82369728).

Almost surely, 2^1021120012 is an apocalyptic number.

It is an amenable number.

1021120012 is a deficient number, since it is larger than the sum of its proper divisors (955753460).

1021120012 is a wasteful number, since it uses less digits than its factorization.

1021120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326949 (or 326947 counting only the distinct ones).

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

The square root of 1021120012 is about 31954.9685025662. The cubic root of 1021120012 is about 1006.9910158044.

Adding to 1021120012 its reverse (2100211201), we get a palindrome (3121331213).

The spelling of 1021120012 in words is "one billion, twenty-one million, one hundred twenty thousand, twelve".