1021200008 has 8 divisors (see below), whose sum is σ = 1914750030. Its totient is φ = 510600000.

The previous prime is 1021199983. The next prime is 1021200017. The reversal of 1021200008 is 8000021201.

1021200008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 719205124 + 301994884 = 26818^2 + 17378^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1021199965 and 1021200001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63824993 + ... + 63825008.

Almost surely, 2^1021200008 is an apocalyptic number.

It is an amenable number.

1021200008 is a deficient number, since it is larger than the sum of its proper divisors (893550022).

1021200008 is a wasteful number, since it uses less digits than its factorization.

1021200008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127650007 (or 127650003 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1021200008 is about 31956.2201769859. The cubic root of 1021200008 is about 1007.0173114891.

Adding to 1021200008 its reverse (8000021201), we get a palindrome (9021221209).

The spelling of 1021200008 in words is "one billion, twenty-one million, two hundred thousand, eight".