211012112211011 has 4 divisors (see below), whose sum is σ = 223424589399912. Its totient is φ = 198599635022112.

The previous prime is 211012112211007. The next prime is 211012112211127. The reversal of 211012112211011 is 110112211210112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211012112211011 - 2² = 211012112211007 is a prime.

It is a super-2 number, since 2×211012112211011² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 12412477188883 = 211012112211011 / (2 + 1 + 1 + 0 + 1 + 2 + 1 + 1 + 2 + 2 + 1 + 1 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211012112111011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6206238594425 + ... + 6206238594458.

It is an arithmetic number, because the mean of its divisors is an integer number (55856147349978).

Almost surely, 2^{211012112211011} is an apocalyptic number.

211012112211011 is a deficient number, since it is larger than the sum of its proper divisors (12412477188901).

211012112211011 is a wasteful number, since it uses less digits than its factorization.

211012112211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12412477188900.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211012112211011 its reverse (110112211210112), we get a palindrome (321124323421123).

The spelling of 211012112211011 in words is "two hundred eleven trillion, twelve billion, one hundred twelve million, two hundred eleven thousand, eleven".