12220212001 has 4 divisors (see below), whose sum is σ = 12282243732. Its totient is φ = 12158180272.

The previous prime is 12220211987. The next prime is 12220212049. The reversal of 12220212001 is 10021202221.

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 6030299025 + 6189912976 = 77655^2 + 78676^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220212001 - 2¹⁹ = 12219687713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220212061) 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, 31015570 + ... + 31015963.

It is an arithmetic number, because the mean of its divisors is an integer number (3070560933).

Almost surely, 2^12220212001 is an apocalyptic number.

It is an amenable number.

12220212001 is a deficient number, since it is larger than the sum of its proper divisors (62031731).

12220212001 is an equidigital number, since it uses as much as digits as its factorization.

12220212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62031730.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12220212001 its reverse (10021202221), we get a palindrome (22241414222).

The spelling of 12220212001 in words is "twelve billion, two hundred twenty million, two hundred twelve thousand, one".