201113123211 has 256 divisors, whose sum is σ = 412778741760. Its totient is φ = 93405312000.

The previous prime is 201113123209. The next prime is 201113123213. The reversal of 201113123211 is 112321311102.

201113123211 is a `hidden beast` number, since 20 + 1 + 11 + 312 + 321 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (201113123209) and next prime (201113123213).

It is not a de Polignac number, because 201113123211 - 2¹ = 201113123209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201113123213) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 152242431 + ... + 152243751.

It is an arithmetic number, because the mean of its divisors is an integer number (1612416960).

Almost surely, 2^201113123211 is an apocalyptic number.

201113123211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201113123211 is an abundant number, since it is smaller than the sum of its proper divisors (211665618549).

201113123211 is a wasteful number, since it uses less digits than its factorization.

201113123211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 201113123211 its reverse (112321311102), we get a palindrome (313434434313).

The spelling of 201113123211 in words is "two hundred one billion, one hundred thirteen million, one hundred twenty-three thousand, two hundred eleven".