2012221011001 has 4 divisors (see below), whose sum is σ = 2012289508900. Its totient is φ = 2012152513104.

The previous prime is 2012221010927. The next prime is 2012221011049. The reversal of 2012221011001 is 1001101222102.

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 526988883600 + 1485232127401 = 725940^2 + 1218701^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012221011001 - 2¹⁵ = 2012220978233 is a prime.

It is a super-2 number, since 2×2012221011001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012221011601) 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, 34204866 + ... + 34263643.

It is an arithmetic number, because the mean of its divisors is an integer number (503072377225).

Almost surely, 2^{2012221011001} is an apocalyptic number.

It is an amenable number.

2012221011001 is a deficient number, since it is larger than the sum of its proper divisors (68497899).

2012221011001 is an equidigital number, since it uses as much as digits as its factorization.

2012221011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68497898.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2012221011001 its reverse (1001101222102), we get a palindrome (3013322233103).

The spelling of 2012221011001 in words is "two trillion, twelve billion, two hundred twenty-one million, eleven thousand, one".