1012021010 has 216 divisors, whose sum is σ = 2547125028. Its totient is φ = 288288000.

The previous prime is 1012021001. The next prime is 1012021019. The reversal of 1012021010 is 101202101.

It is an interprime number because it is at equal distance from previous prime (1012021001) and next prime (1012021019).

It can be written as a sum of positive squares in 6 ways, for example, as 338670409 + 673350601 = 18403^2 + 25949^2 .

It is not an unprimeable number, because it can be changed into a prime (1012021019) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 10019960 + ... + 10020060.

Almost surely, 2^1012021010 is an apocalyptic number.

1012021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012021010 is an abundant number, since it is smaller than the sum of its proper divisors (1535104018).

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

1012021010 is a wasteful number, since it uses less digits than its factorization.

1012021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1012021010 is about 31812.2776613055. The cubic root of 1012021010 is about 1003.9910536337.

Adding to 1012021010 its reverse (101202101), we get a palindrome (1113223111).

The spelling of 1012021010 in words is "one billion, twelve million, twenty-one thousand, ten".