210011121111 has 16 divisors (see below), whose sum is σ = 305497565568. Its totient is φ = 127268282400.

The previous prime is 210011121109. The next prime is 210011121127. The reversal of 210011121111 is 111121110012.

It is not a de Polignac number, because 210011121111 - 2¹ = 210011121109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210011123111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109680 + ... + 657306.

It is an arithmetic number, because the mean of its divisors is an integer number (19093597848).

Almost surely, 2^210011121111 is an apocalyptic number.

210011121111 is a deficient number, since it is larger than the sum of its proper divisors (95486444457).

210011121111 is a wasteful number, since it uses less digits than its factorization.

210011121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559262.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 210011121111 its reverse (111121110012), we get a palindrome (321132231123).

The spelling of 210011121111 in words is "two hundred ten billion, eleven million, one hundred twenty-one thousand, one hundred eleven".