211021112001 has 32 divisors (see below), whose sum is σ = 333339033600. Its totient is φ = 116182221120.

The previous prime is 211021111999. The next prime is 211021112033. The reversal of 211021112001 is 100211120112.

It is not a de Polignac number, because 211021112001 - 2¹ = 211021111999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211021102001) 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, 69985 + ... + 653406.

It is an arithmetic number, because the mean of its divisors is an integer number (10416844800).

Almost surely, 2^211021112001 is an apocalyptic number.

211021112001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211021112001 is a deficient number, since it is larger than the sum of its proper divisors (122317921599).

211021112001 is a wasteful number, since it uses less digits than its factorization.

211021112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723909.

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

Adding to 211021112001 its reverse (100211120112), we get a palindrome (311232232113).

It can be divided in two parts, 2110211 and 12001, that added together give a palindrome (2122212).

The spelling of 211021112001 in words is "two hundred eleven billion, twenty-one million, one hundred twelve thousand, one".