1223223212001 has 128 divisors (see below), whose sum is σ = 1941067763712. Its totient is φ = 670924800000.

The previous prime is 1223223211993. The next prime is 1223223212009. The reversal of 1223223212001 is 1002123223221.

It is an interprime number because it is at equal distance from previous prime (1223223211993) and next prime (1223223212009).

It is not a de Polignac number, because 1223223212001 - 2³ = 1223223211993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1223223212009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4759623265 + ... + 4759623521.

It is an arithmetic number, because the mean of its divisors is an integer number (15164591904).

Almost surely, 2^{1223223212001} is an apocalyptic number.

It is an amenable number.

1223223212001 is a deficient number, since it is larger than the sum of its proper divisors (717844551711).

1223223212001 is a wasteful number, since it uses less digits than its factorization.

1223223212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1223223212001 its reverse (1002123223221), we get a palindrome (2225346435222).

The spelling of 1223223212001 in words is "one trillion, two hundred twenty-three billion, two hundred twenty-three million, two hundred twelve thousand, one".