10012011021 has 16 divisors (see below), whose sum is σ = 15477505920. Its totient is φ = 6384470400.

The previous prime is 10012010941. The next prime is 10012011049. The reversal of 10012011021 is 12011021001.

It is a happy number.

10012011021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10012011021 - 2⁹ = 10012010509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10012010994 and 10012011012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012018021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8060580 + ... + 8061821.

It is an arithmetic number, because the mean of its divisors is an integer number (967344120).

Almost surely, 2^10012011021 is an apocalyptic number.

It is an amenable number.

10012011021 is a deficient number, since it is larger than the sum of its proper divisors (5465494899).

10012011021 is a wasteful number, since it uses less digits than its factorization.

10012011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16122433 (or 16122427 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10012011021 its reverse (12011021001), we get a palindrome (22023032022).

The spelling of 10012011021 in words is "ten billion, twelve million, eleven thousand, twenty-one".