211122110001 has 32 divisors (see below), whose sum is σ = 315545637888. Its totient is φ = 124431733440.

The previous prime is 211122109993. The next prime is 211122110077. The reversal of 211122110001 is 100011221112.

It is not a de Polignac number, because 211122110001 - 2³ = 211122109993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211122110701) 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, 2432316 + ... + 2517618.

It is an arithmetic number, because the mean of its divisors is an integer number (9860801184).

Almost surely, 2^211122110001 is an apocalyptic number.

It is an amenable number.

211122110001 is a deficient number, since it is larger than the sum of its proper divisors (104423527887).

211122110001 is a wasteful number, since it uses less digits than its factorization.

211122110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87381.

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

Adding to 211122110001 its reverse (100011221112), we get a palindrome (311133331113).

Subtracting from 211122110001 its reverse (100011221112), we obtain a square (111110888889 = 333333²).

It can be divided in two parts, 211122 and 110001, that added together give a palindrome (321123).

The spelling of 211122110001 in words is "two hundred eleven billion, one hundred twenty-two million, one hundred ten thousand, one".