1020211012 has 6 divisors (see below), whose sum is σ = 1785369278. Its totient is φ = 510105504.

The previous prime is 1020210973. The next prime is 1020211013. The reversal of 1020211012 is 2101120201.

It can be written as a sum of positive squares in only one way, i.e., 1000709956 + 19501056 = 31634^2 + 4416^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1020211012.

It is not an unprimeable number, because it can be changed into a prime (1020211013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127526373 + ... + 127526380.

Almost surely, 2^1020211012 is an apocalyptic number.

It is an amenable number.

1020211012 is a deficient number, since it is larger than the sum of its proper divisors (765158266).

1020211012 is a wasteful number, since it uses less digits than its factorization.

1020211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255052757 (or 255052755 counting only the distinct ones).

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

The square root of 1020211012 is about 31940.7421955095. The cubic root of 1020211012 is about 1006.6921196338.

Adding to 1020211012 its reverse (2101120201), we get a palindrome (3121331213).

The spelling of 1020211012 in words is "one billion, twenty million, two hundred eleven thousand, twelve".