211121111211011 has 8 divisors (see below), whose sum is σ = 216037422526464. Its totient is φ = 206205096169800.

The previous prime is 211121111210921. The next prime is 211121111211077. The reversal of 211121111211011 is 110112111121112.

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 211121111211011 - 2³⁸ = 210846233304067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211121111231011) 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, 72626471 + ... + 75477456.

It is an arithmetic number, because the mean of its divisors is an integer number (27004677815808).

Almost surely, 2^{211121111211011} is an apocalyptic number.

211121111211011 is a deficient number, since it is larger than the sum of its proper divisors (4916311315453).

211121111211011 is a wasteful number, since it uses less digits than its factorization.

211121111211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148137121.

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 211121111211011 its reverse (110112111121112), we get a palindrome (321233222332123).

The spelling of 211121111211011 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred eleven million, two hundred eleven thousand, eleven".