2220000002001 has 6 divisors (see below), whose sum is σ = 3206666669570. Its totient is φ = 1480000001328.

The previous prime is 2220000001937. The next prime is 2220000002029. The reversal of 2220000002001 is 1002000000222.

It can be written as a sum of positive squares in only one way, i.e., 1767237890625 + 452762111376 = 1329375^2 + 672876^2 .

It is not a de Polignac number, because 2220000002001 - 2⁶ = 2220000001937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 246666666889 = 2220000002001 / (2 + 2 + 2 + 0 + 0 + 0 + 0 + 0 + 0 + 2 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220000002081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123333333436 + ... + 123333333453.

Almost surely, 2^{2220000002001} is an apocalyptic number.

It is an amenable number.

2220000002001 is a deficient number, since it is larger than the sum of its proper divisors (986666667569).

2220000002001 is a wasteful number, since it uses less digits than its factorization.

2220000002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246666666895 (or 246666666892 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 2220000002001 its reverse (1002000000222), we get a palindrome (3222000002223).

The spelling of 2220000002001 in words is "two trillion, two hundred twenty billion, two thousand, one".