12100022001 has 16 divisors (see below), whose sum is σ = 17928165120. Its totient is φ = 8065688400.

The previous prime is 12100021993. The next prime is 12100022057. The reversal of 12100022001 is 10022000121.

It is not a de Polignac number, because 12100022001 - 2³ = 12100021993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12100022401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244696 + ... + 289958.

It is an arithmetic number, because the mean of its divisors is an integer number (1120510320).

Almost surely, 2^12100022001 is an apocalyptic number.

It is an amenable number.

12100022001 is a deficient number, since it is larger than the sum of its proper divisors (5828143119).

12100022001 is an equidigital number, since it uses as much as digits as its factorization.

12100022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55173 (or 55167 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12100022001 its reverse (10022000121), we get a palindrome (22122022122).

The spelling of 12100022001 in words is "twelve billion, one hundred million, twenty-two thousand, one".