220120212001 has 16 divisors (see below), whose sum is σ = 227381515200. Its totient is φ = 213014357248.

The previous prime is 220120211953. The next prime is 220120212029. The reversal of 220120212001 is 100212021022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220120212001 - 2³⁷ = 82681258529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220120212071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651165 + ... + 929653.

It is an arithmetic number, because the mean of its divisors is an integer number (14211344700).

Almost surely, 2^220120212001 is an apocalyptic number.

It is an amenable number.

220120212001 is a deficient number, since it is larger than the sum of its proper divisors (7261303199).

220120212001 is a wasteful number, since it uses less digits than its factorization.

220120212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278768.

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

Adding to 220120212001 its reverse (100212021022), we get a palindrome (320332233023).

The spelling of 220120212001 in words is "two hundred twenty billion, one hundred twenty million, two hundred twelve thousand, one".