211122012121111 has 8 divisors (see below), whose sum is σ = 259842476456864. Its totient is φ = 167041592007840.

The previous prime is 211122012121103. The next prime is 211122012121117. The reversal of 211122012121111 is 111121210221112.

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 211122012121111 - 2³ = 211122012121103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122012121117) 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, 1160011055520 + ... + 1160011055701.

It is an arithmetic number, because the mean of its divisors is an integer number (32480309557108).

Almost surely, 2^{211122012121111} is an apocalyptic number.

211122012121111 is a deficient number, since it is larger than the sum of its proper divisors (48720464335753).

211122012121111 is a wasteful number, since it uses less digits than its factorization.

211122012121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320022111241.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 211122012121111 its reverse (111121210221112), we get a palindrome (322243222342223).

The spelling of 211122012121111 in words is "two hundred eleven trillion, one hundred twenty-two billion, twelve million, one hundred twenty-one thousand, one hundred eleven".