10021001012 has 24 divisors (see below), whose sum is σ = 19133540832. Its totient is φ = 4554396000.

The previous prime is 10021001009. The next prime is 10021001017. The reversal of 10021001012 is 21010012001.

It is a super-2 number, since 2×10021001012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021001017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622262 + ... + 638162.

It is an arithmetic number, because the mean of its divisors is an integer number (797230868).

Almost surely, 2^10021001012 is an apocalyptic number.

It is an amenable number.

10021001012 is a deficient number, since it is larger than the sum of its proper divisors (9112539820).

10021001012 is a wasteful number, since it uses less digits than its factorization.

10021001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30239 (or 30237 counting only the distinct ones).

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

Adding to 10021001012 its reverse (21010012001), we get a palindrome (31031013013).

The spelling of 10021001012 in words is "ten billion, twenty-one million, one thousand, twelve".