220312021201 has 4 divisors (see below), whose sum is σ = 221430356532. Its totient is φ = 219193685872.

The previous prime is 220312021199. The next prime is 220312021273. The reversal of 220312021201 is 102120213022.

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 174076700625 + 46235320576 = 417225^2 + 215024^2 .

It is a cyclic number.

It is not a de Polignac number, because 220312021201 - 2¹ = 220312021199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220312021001) 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, 559167370 + ... + 559167763.

It is an arithmetic number, because the mean of its divisors is an integer number (55357589133).

Almost surely, 2^220312021201 is an apocalyptic number.

It is an amenable number.

220312021201 is a deficient number, since it is larger than the sum of its proper divisors (1118335331).

220312021201 is a wasteful number, since it uses less digits than its factorization.

220312021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118335330.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220312021201 its reverse (102120213022), we get a palindrome (322432234223).

The spelling of 220312021201 in words is "two hundred twenty billion, three hundred twelve million, twenty-one thousand, two hundred one".