111210122001 has 64 divisors (see below), whose sum is σ = 170336618496. Its totient is φ = 63924940800.

The previous prime is 111210121993. The next prime is 111210122003. The reversal of 111210122001 is 100221012111.

It is not a de Polignac number, because 111210122001 - 2³ = 111210121993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111210122003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30292396 + ... + 30296066.

It is an arithmetic number, because the mean of its divisors is an integer number (2661509664).

Almost surely, 2^111210122001 is an apocalyptic number.

111210122001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111210122001 is a deficient number, since it is larger than the sum of its proper divisors (59126496495).

111210122001 is a wasteful number, since it uses less digits than its factorization.

111210122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111210122001 its reverse (100221012111), we get a palindrome (211431134112).

The spelling of 111210122001 in words is "one hundred eleven billion, two hundred ten million, one hundred twenty-two thousand, one".