2012221221999 has 4 divisors (see below), whose sum is σ = 2682961629336. Its totient is φ = 1341480814664.

The previous prime is 2012221221977. The next prime is 2012221222027. The reversal of 2012221221999 is 9991221222102.

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

It is a cyclic number.

It is not a de Polignac number, because 2012221221999 - 2⁹ = 2012221221487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2012221221999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012221221599) 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, 335370203664 + ... + 335370203669.

It is an arithmetic number, because the mean of its divisors is an integer number (670740407334).

Almost surely, 2^{2012221221999} is an apocalyptic number.

2012221221999 is a deficient number, since it is larger than the sum of its proper divisors (670740407337).

2012221221999 is an equidigital number, since it uses as much as digits as its factorization.

2012221221999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670740407336.

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 2012221221999 in words is "two trillion, twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, nine hundred ninety-nine".