220201022212001 has 4 divisors (see below), whose sum is σ = 220608048131604. Its totient is φ = 219793996292400.

The previous prime is 220201022211893. The next prime is 220201022212057. The reversal of 220201022212001 is 100212220102022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 146535261780625 + 73665760431376 = 12105175^2 + 8582876^2 .

It is a cyclic number.

It is not a de Polignac number, because 220201022212001 - 2⁴⁶ = 149832278034337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220201022232001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203512958990 + ... + 203512960071.

It is an arithmetic number, because the mean of its divisors is an integer number (55152012032901).

Almost surely, 2^{220201022212001} is an apocalyptic number.

It is an amenable number.

220201022212001 is a deficient number, since it is larger than the sum of its proper divisors (407025919603).

220201022212001 is an equidigital number, since it uses as much as digits as its factorization.

220201022212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407025919602.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220201022212001 its reverse (100212220102022), we get a palindrome (320413242314023).

The spelling of 220201022212001 in words is "two hundred twenty trillion, two hundred one billion, twenty-two million, two hundred twelve thousand, one".