211102020111 has 32 divisors (see below), whose sum is σ = 292267454400. Its totient is φ = 135422668800.

The previous prime is 211102020089. The next prime is 211102020127. The reversal of 211102020111 is 111020201112.

It is not a de Polignac number, because 211102020111 - 2⁷ = 211102019983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211102020161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10404885 + ... + 10425153.

It is an arithmetic number, because the mean of its divisors is an integer number (9133357950).

Almost surely, 2^211102020111 is an apocalyptic number.

211102020111 is a deficient number, since it is larger than the sum of its proper divisors (81165434289).

211102020111 is a wasteful number, since it uses less digits than its factorization.

211102020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21339.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211102020111 its reverse (111020201112), we get a palindrome (322122221223).

It can be divided in two parts, 2 and 11102020111, that multiplied together give a palindrome (22204040222).

The spelling of 211102020111 in words is "two hundred eleven billion, one hundred two million, twenty thousand, one hundred eleven".