1021002010 has 32 divisors (see below), whose sum is σ = 2129939712. Its totient is φ = 345125760.

The previous prime is 1021002001. The next prime is 1021002029. The reversal of 1021002010 is 102001201.

1021002010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 1021001984 and 1021002002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97747 + ... + 107686.

It is an arithmetic number, because the mean of its divisors is an integer number (66560616).

Almost surely, 2^1021002010 is an apocalyptic number.

1021002010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021002010 is an abundant number, since it is smaller than the sum of its proper divisors (1108937702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021002010 is a wasteful number, since it uses less digits than its factorization.

1021002010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205518.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1021002010 is about 31953.1220696820. The cubic root of 1021002010 is about 1006.9522245653.

Adding to 1021002010 its reverse (102001201), we get a palindrome (1123003211).

The spelling of 1021002010 in words is "one billion, twenty-one million, two thousand, ten".