211142331401 has 4 divisors (see below), whose sum is σ = 216292144404. Its totient is φ = 205992518400.

The previous prime is 211142331373. The next prime is 211142331409. The reversal of 211142331401 is 104133241112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15226326025 + 195916005376 = 123395^2 + 442624^2 .

It is a cyclic number.

It is not a de Polignac number, because 211142331401 - 2¹⁴ = 211142315017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211142331409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2574906440 + ... + 2574906521.

It is an arithmetic number, because the mean of its divisors is an integer number (54073036101).

Almost surely, 2^211142331401 is an apocalyptic number.

It is an amenable number.

211142331401 is a deficient number, since it is larger than the sum of its proper divisors (5149813003).

211142331401 is an equidigital number, since it uses as much as digits as its factorization.

211142331401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149813002.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 211142331401 its reverse (104133241112), we get a palindrome (315275572513).

The spelling of 211142331401 in words is "two hundred eleven billion, one hundred forty-two million, three hundred thirty-one thousand, four hundred one".