211142123 has 8 divisors (see below), whose sum is σ = 213954048. Its totient is φ = 208336744.

The previous prime is 211142119. The next prime is 211142153. The reversal of 211142123 is 321241112.

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 211142123 - 2² = 211142119 is a prime.

It is a super-2 number, since 2×211142123² = 89161992209894258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211142153) 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, 130586 + ... + 132192.

It is an arithmetic number, because the mean of its divisors is an integer number (26744256).

Almost surely, 2^211142123 is an apocalyptic number.

211142123 is a deficient number, since it is larger than the sum of its proper divisors (2811925).

211142123 is a wasteful number, since it uses less digits than its factorization.

211142123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273.

The product of its digits is 96, while the sum is 17.

The square root of 211142123 is about 14530.7302982335. The cubic root of 211142123 is about 595.4678174749.

Adding to 211142123 its reverse (321241112), we get a palindrome (532383235).

The spelling of 211142123 in words is "two hundred eleven million, one hundred forty-two thousand, one hundred twenty-three".