220001221200001 has 8 divisors (see below), whose sum is σ = 221227351607808. Its totient is φ = 218775207870000.

The previous prime is 220001221199933. The next prime is 220001221200017. The reversal of 220001221200001 is 100002122100022.

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 not a de Polignac number, because 220001221200001 - 2⁹ = 220001221199489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220001221200091) 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, 25499425 + ... + 33018526.

It is an arithmetic number, because the mean of its divisors is an integer number (27653418950976).

Almost surely, 2^{220001221200001} is an apocalyptic number.

It is an amenable number.

220001221200001 is a deficient number, since it is larger than the sum of its proper divisors (1226130407807).

220001221200001 is a wasteful number, since it uses less digits than its factorization.

220001221200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58538903.

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

Adding to 220001221200001 its reverse (100002122100022), we get a palindrome (320003343300023).

The spelling of 220001221200001 in words is "two hundred twenty trillion, one billion, two hundred twenty-one million, two hundred thousand, one".