220122220001 has 4 divisors (see below), whose sum is σ = 220144929732. Its totient is φ = 220099510272.

The previous prime is 220122219973. The next prime is 220122220027. The reversal of 220122220001 is 100022221022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100022221022 = 2 ⋅50011110511.

It can be written as a sum of positive squares in 2 ways, for example, as 38284792225 + 181837427776 = 195665^2 + 426424^2 .

It is a cyclic number.

It is not a de Polignac number, because 220122220001 - 2¹⁰ = 220122218977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220122220091) 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, 11340320 + ... + 11359713.

It is an arithmetic number, because the mean of its divisors is an integer number (55036232433).

Almost surely, 2^220122220001 is an apocalyptic number.

It is an amenable number.

220122220001 is a deficient number, since it is larger than the sum of its proper divisors (22709731).

220122220001 is an equidigital number, since it uses as much as digits as its factorization.

220122220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22709730.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220122220001 its reverse (100022221022), we get a palindrome (320144441023).

The spelling of 220122220001 in words is "two hundred twenty billion, one hundred twenty-two million, two hundred twenty thousand, one".