2012010000221 has 4 divisors (see below), whose sum is σ = 2166780000252. Its totient is φ = 1857240000192.

The previous prime is 2012010000167. The next prime is 2012010000241. The reversal of 2012010000221 is 1220000102102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1303567944121 + 708442056100 = 1141739^2 + 841690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012010000221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012010000241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77384999996 + ... + 77385000021.

It is an arithmetic number, because the mean of its divisors is an integer number (541695000063).

Almost surely, 2^{2012010000221} is an apocalyptic number.

It is an amenable number.

2012010000221 is a deficient number, since it is larger than the sum of its proper divisors (154770000031).

2012010000221 is a wasteful number, since it uses less digits than its factorization.

2012010000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154770000030.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2012010000221 its reverse (1220000102102), we get a palindrome (3232010102323).

The spelling of 2012010000221 in words is "two trillion, twelve billion, ten million, two hundred twenty-one", and thus it is an aban number.