211142142243 has 48 divisors (see below), whose sum is σ = 326663850240. Its totient is φ = 131121494592.

The previous prime is 211142142223. The next prime is 211142142271. The reversal of 211142142243 is 342241241112.

211142142243 is a `hidden beast` number, since 2 + 1 + 11 + 421 + 4 + 224 + 3 = 666.

It is not a de Polignac number, because 211142142243 - 2¹⁶ = 211142076707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211142142203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1226005 + ... + 1387577.

It is an arithmetic number, because the mean of its divisors is an integer number (6805496880).

Almost surely, 2^211142142243 is an apocalyptic number.

211142142243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

211142142243 is a deficient number, since it is larger than the sum of its proper divisors (115521707997).

211142142243 is a wasteful number, since it uses less digits than its factorization.

211142142243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161768 (or 161765 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 211142142243 its reverse (342241241112), we get a palindrome (553383383355).

The spelling of 211142142243 in words is "two hundred eleven billion, one hundred forty-two million, one hundred forty-two thousand, two hundred forty-three".