212143242101 has 16 divisors (see below), whose sum is σ = 246047499264. Its totient is φ = 179155321344.

The previous prime is 212143242049. The next prime is 212143242107. The reversal of 212143242101 is 101242341212.

It is a cyclic number.

It is not a de Polignac number, because 212143242101 - 2³⁰ = 211069500277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212143242107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549110 + ... + 851943.

It is an arithmetic number, because the mean of its divisors is an integer number (15377968704).

Almost surely, 2^212143242101 is an apocalyptic number.

It is an amenable number.

212143242101 is a deficient number, since it is larger than the sum of its proper divisors (33904257163).

212143242101 is a wasteful number, since it uses less digits than its factorization.

212143242101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401380.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 212143242101 its reverse (101242341212), we get a palindrome (313385583313).

The spelling of 212143242101 in words is "two hundred twelve billion, one hundred forty-three million, two hundred forty-two thousand, one hundred one".