12220212001001 has 4 divisors (see below), whose sum is σ = 12229677697104. Its totient is φ = 12210746304900.

The previous prime is 12220212000991. The next prime is 12220212001009. The reversal of 12220212001001 is 10010021202221.

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 a de Polignac number, because none of the positive numbers 2^k-12220212001001 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 (12220212001009) 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, 4732846115 + ... + 4732848696.

It is an arithmetic number, because the mean of its divisors is an integer number (3057419424276).

Almost surely, 2^{12220212001001} is an apocalyptic number.

It is an amenable number.

12220212001001 is a deficient number, since it is larger than the sum of its proper divisors (9465696103).

12220212001001 is an equidigital number, since it uses as much as digits as its factorization.

12220212001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9465696102.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12220212001001 its reverse (10010021202221), we get a palindrome (22230233203222).

The spelling of 12220212001001 in words is "twelve trillion, two hundred twenty billion, two hundred twelve million, one thousand, one".