12331220001 has 32 divisors (see below), whose sum is σ = 17692784640. Its totient is φ = 7614857664.

The previous prime is 12331219993. The next prime is 12331220009. The reversal of 12331220001 is 10002213321.

It is an interprime number because it is at equal distance from previous prime (12331219993) and next prime (12331220009).

It is not a de Polignac number, because 12331220001 - 2³ = 12331219993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12331220009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3998206 + ... + 4001288.

It is an arithmetic number, because the mean of its divisors is an integer number (552899520).

Almost surely, 2^12331220001 is an apocalyptic number.

It is an amenable number.

12331220001 is a deficient number, since it is larger than the sum of its proper divisors (5361564639).

12331220001 is a wasteful number, since it uses less digits than its factorization.

12331220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12331220001 its reverse (10002213321), we get a palindrome (22333433322).

The spelling of 12331220001 in words is "twelve billion, three hundred thirty-one million, two hundred twenty thousand, one".