1021013212 has 12 divisors (see below), whose sum is σ = 1808301096. Its totient is φ = 504355760.

The previous prime is 1021013207. The next prime is 1021013221. The reversal of 1021013212 is 2123101201.

It is a junction number, because it is equal to n+sod(n) for n = 1021013192 and 1021013201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1537339 + ... + 1538002.

It is an arithmetic number, because the mean of its divisors is an integer number (150691758).

Almost surely, 2^1021013212 is an apocalyptic number.

It is an amenable number.

1021013212 is a deficient number, since it is larger than the sum of its proper divisors (787287884).

1021013212 is a wasteful number, since it uses less digits than its factorization.

1021013212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075428 (or 3075426 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1021013212 is about 31953.2973572369. The cubic root of 1021013212 is about 1006.9559071691.

Adding to 1021013212 its reverse (2123101201), we get a palindrome (3144114413).

The spelling of 1021013212 in words is "one billion, twenty-one million, thirteen thousand, two hundred twelve".