211123331101001 has 16 divisors (see below), whose sum is σ = 232600598611200. Its totient is φ = 190026833184000.

The previous prime is 211123331100973. The next prime is 211123331101013. The reversal of 211123331101001 is 100101133321112.

It is a cyclic number.

It is not a de Polignac number, because 211123331101001 - 2¹⁸ = 211123330838857 is a prime.

It is a super-2 number, since 2×211123331101001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211123331101801) 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, 66405440 + ... + 69512078.

It is an arithmetic number, because the mean of its divisors is an integer number (14537537413200).

Almost surely, 2^{211123331101001} is an apocalyptic number.

It is an amenable number.

211123331101001 is a deficient number, since it is larger than the sum of its proper divisors (21477267510199).

211123331101001 is a wasteful number, since it uses less digits than its factorization.

211123331101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3167920.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 211123331101001 its reverse (100101133321112), we get a palindrome (311224464422113).

The spelling of 211123331101001 in words is "two hundred eleven trillion, one hundred twenty-three billion, three hundred thirty-one million, one hundred one thousand, one".