2010012021 has 24 divisors (see below), whose sum is σ = 3056429376. Its totient is φ = 1270389120.

The previous prime is 2010012001. The next prime is 2010012023. The reversal of 2010012021 is 1202100102.

It is not a de Polignac number, because 2010012021 - 2⁵ = 2010011989 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 = 2010011994 and 2010012012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010012023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19575 + ... + 66356.

It is an arithmetic number, because the mean of its divisors is an integer number (127351224).

Almost surely, 2^2010012021 is an apocalyptic number.

It is an amenable number.

2010012021 is a deficient number, since it is larger than the sum of its proper divisors (1046417355).

2010012021 is a wasteful number, since it uses less digits than its factorization.

2010012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86073 (or 86070 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2010012021 is about 44833.1576068427. The cubic root of 2010012021 is about 1262.0199440875.

Adding to 2010012021 its reverse (1202100102), we get a palindrome (3212112123).

The spelling of 2010012021 in words is "two billion, ten million, twelve thousand, twenty-one".