2220001212001 has 8 divisors (see below), whose sum is σ = 2244874547720. Its totient is φ = 2195168421888.

The previous prime is 2220001211971. The next prime is 2220001212029. The reversal of 2220001212001 is 1002121000222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 128738157601 + 2091263054400 = 358801^2 + 1446120^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2220001212001 - 2⁹ = 2220001211489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220001212031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10026276 + ... + 10245301.

It is an arithmetic number, because the mean of its divisors is an integer number (280609318465).

Almost surely, 2^{2220001212001} is an apocalyptic number.

It is an amenable number.

2220001212001 is a deficient number, since it is larger than the sum of its proper divisors (24873335719).

2220001212001 is a wasteful number, since it uses less digits than its factorization.

2220001212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20272803.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2220001212001 its reverse (1002121000222), we get a palindrome (3222122212223).

The spelling of 2220001212001 in words is "two trillion, two hundred twenty billion, one million, two hundred twelve thousand, one".