22220222001 has 4 divisors (see below), whose sum is σ = 29626962672. Its totient is φ = 14813481332.

The previous prime is 22220221987. The next prime is 22220222009. The reversal of 22220222001 is 10022202222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22220222001 - 2¹³ = 22220213809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22220222009) 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, 3703370331 + ... + 3703370336.

It is an arithmetic number, because the mean of its divisors is an integer number (7406740668).

Almost surely, 2^22220222001 is an apocalyptic number.

It is an amenable number.

22220222001 is a deficient number, since it is larger than the sum of its proper divisors (7406740671).

22220222001 is an equidigital number, since it uses as much as digits as its factorization.

22220222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7406740670.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 22220222001 its reverse (10022202222), we get a palindrome (32242424223).

The spelling of 22220222001 in words is "twenty-two billion, two hundred twenty million, two hundred twenty-two thousand, one".