2001221119 has 2 divisors, whose sum is σ = 2001221120. Its totient is φ = 2001221118.

The previous prime is 2001221077. The next prime is 2001221141. The reversal of 2001221119 is 9111221002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001221119 - 2¹⁵ = 2001188351 is a prime.

It is a super-2 number, since 2×2001221119² = 8009771934263224322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001221096 and 2001221105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001221819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000610559 + 1000610560.

It is an arithmetic number, because the mean of its divisors is an integer number (1000610560).

Almost surely, 2^2001221119 is an apocalyptic number.

2001221119 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001221119 is an equidigital number, since it uses as much as digits as its factorization.

2001221119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 2001221119 is about 44735.0099921750. The cubic root of 2001221119 is about 1260.1774166483.

The spelling of 2001221119 in words is "two billion, one million, two hundred twenty-one thousand, one hundred nineteen".