210011122212111 has 36 divisors (see below), whose sum is σ = 342445356618456. Its totient is φ = 123839482361760.

The previous prime is 210011122212007. The next prime is 210011122212181. The reversal of 210011122212111 is 111212221110012.

It is a happy number.

210011122212111 is a `hidden beast` number, since 210 + 0 + 11 + 12 + 221 + 211 + 1 = 666.

It is not a de Polignac number, because 210011122212111 - 2²³ = 210011113823503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210011122212181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2606009421 + ... + 2606090006.

Almost surely, 2^{210011122212111} is an apocalyptic number.

210011122212111 is a deficient number, since it is larger than the sum of its proper divisors (132434234406345).

210011122212111 is a wasteful number, since it uses less digits than its factorization.

210011122212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5212099492 (or 5212099478 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 210011122212111 its reverse (111212221110012), we get a palindrome (321223343322123).

The spelling of 210011122212111 in words is "two hundred ten trillion, eleven billion, one hundred twenty-two million, two hundred twelve thousand, one hundred eleven".