220022220001 has 4 divisors (see below), whose sum is σ = 220023176212. Its totient is φ = 220021263792.

The previous prime is 220022219983. The next prime is 220022220023. The reversal of 220022220001 is 100022220022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 36786856401 + 183235363600 = 191799^2 + 428060^2 .

It is a cyclic number.

It is not a de Polignac number, because 220022220001 - 2⁹ = 220022219489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220022220091) 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, 100255 + ... + 670891.

It is an arithmetic number, because the mean of its divisors is an integer number (55005794053).

Almost surely, 2^220022220001 is an apocalyptic number.

It is an amenable number.

220022220001 is a deficient number, since it is larger than the sum of its proper divisors (956211).

220022220001 is an equidigital number, since it uses as much as digits as its factorization.

220022220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956210.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 220022220001 its reverse (100022220022), we get a palindrome (320044440023).

The spelling of 220022220001 in words is "two hundred twenty billion, twenty-two million, two hundred twenty thousand, one".