211120010001 has 12 divisors (see below), whose sum is σ = 305051577012. Its totient is φ = 140700311136.

The previous prime is 211120009979. The next prime is 211120010011. The reversal of 211120010001 is 100010021112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 201669253776 + 9450756225 = 449076^2 + 97215^2 .

It is not a de Polignac number, because 211120010001 - 2¹¹ = 211120007953 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 (211120010011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3834666 + ... + 3889331.

It is an arithmetic number, because the mean of its divisors is an integer number (25420964751).

Almost surely, 2^211120010001 is an apocalyptic number.

It is an amenable number.

211120010001 is a deficient number, since it is larger than the sum of its proper divisors (93931567011).

211120010001 is a wasteful number, since it uses less digits than its factorization.

211120010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7727040 (or 7727037 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 211120010001 its reverse (100010021112), we get a palindrome (311130031113).

The spelling of 211120010001 in words is "two hundred eleven billion, one hundred twenty million, ten thousand, one".