220001212001 has 8 divisors (see below), whose sum is σ = 229571604864. Its totient is φ = 210431246080.

The previous prime is 220001211967. The next prime is 220001212033. The reversal of 220001212001 is 100212100022.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220001212001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220001242001) 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, 1397441 + ... + 1546881.

It is an arithmetic number, because the mean of its divisors is an integer number (28696450608).

Almost surely, 2^220001212001 is an apocalyptic number.

It is an amenable number.

220001212001 is a deficient number, since it is larger than the sum of its proper divisors (9570392863).

220001212001 is a wasteful number, since it uses less digits than its factorization.

220001212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213471.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220001212001 its reverse (100212100022), we get a palindrome (320213312023).

The spelling of 220001212001 in words is "two hundred twenty billion, one million, two hundred twelve thousand, one".