211211102011 has 8 divisors (see below), whose sum is σ = 259952125664. Its totient is φ = 167112080640.

The previous prime is 211211101979. The next prime is 211211102023. The reversal of 211211102011 is 110201112112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211211102011 - 2⁵ = 211211101979 is a prime.

It is a super-2 number, since 2×211211102011² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 211211101982 and 211211102000.

It is not an unprimeable number, because it can be changed into a prime (211211102051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1160500470 + ... + 1160500651.

It is an arithmetic number, because the mean of its divisors is an integer number (32494015708).

Almost surely, 2^211211102011 is an apocalyptic number.

211211102011 is a deficient number, since it is larger than the sum of its proper divisors (48741023653).

211211102011 is a wasteful number, since it uses less digits than its factorization.

211211102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321001141.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211211102011 its reverse (110201112112), we get a palindrome (321412214123).

The spelling of 211211102011 in words is "two hundred eleven billion, two hundred eleven million, one hundred two thousand, eleven".