213120206137 has 8 divisors (see below), whose sum is σ = 227117926656. Its totient is φ = 199516787712.

The previous prime is 213120206113. The next prime is 213120206147. The reversal of 213120206137 is 731602021312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213120206137 - 2¹⁹ = 213119681849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213120206147) 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, 98574408 + ... + 98576569.

It is an arithmetic number, because the mean of its divisors is an integer number (28389740832).

Almost surely, 2^213120206137 is an apocalyptic number.

It is an amenable number.

213120206137 is a deficient number, since it is larger than the sum of its proper divisors (13997720519).

213120206137 is a wasteful number, since it uses less digits than its factorization.

213120206137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197151047.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 213120206137 its reverse (731602021312), we get a palindrome (944722227449).

The spelling of 213120206137 in words is "two hundred thirteen billion, one hundred twenty million, two hundred six thousand, one hundred thirty-seven".