2222212001 has 4 divisors (see below), whose sum is σ = 2352930372. Its totient is φ = 2091493632.

The previous prime is 2222211991. The next prime is 2222212019. The reversal of 2222212001 is 1002122222.

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 810256225 + 1411955776 = 28465^2 + 37576^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222212001 - 2¹⁸ = 2221949857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2222212061) 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, 65359160 + ... + 65359193.

It is an arithmetic number, because the mean of its divisors is an integer number (588232593).

Almost surely, 2^2222212001 is an apocalyptic number.

It is an amenable number.

2222212001 is a deficient number, since it is larger than the sum of its proper divisors (130718371).

2222212001 is a wasteful number, since it uses less digits than its factorization.

2222212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130718370.

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

The square root of 2222212001 is about 47140.3436665453. The cubic root of 2222212001 is about 1304.9538796499.

Adding to 2222212001 its reverse (1002122222), we get a palindrome (3224334223).

The spelling of 2222212001 in words is "two billion, two hundred twenty-two million, two hundred twelve thousand, one".