213135342101 has 4 divisors (see below), whose sum is σ = 232511282304. Its totient is φ = 193759401900.

The previous prime is 213135342089. The next prime is 213135342107. The reversal of 213135342101 is 101243531312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213135342101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213135342107) 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, 9687970085 + ... + 9687970106.

It is an arithmetic number, because the mean of its divisors is an integer number (58127820576).

Almost surely, 2^213135342101 is an apocalyptic number.

It is an amenable number.

213135342101 is a deficient number, since it is larger than the sum of its proper divisors (19375940203).

213135342101 is a wasteful number, since it uses less digits than its factorization.

213135342101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19375940202.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 213135342101 its reverse (101243531312), we get a palindrome (314378873413).

The spelling of 213135342101 in words is "two hundred thirteen billion, one hundred thirty-five million, three hundred forty-two thousand, one hundred one".