213000012212009 has 16 divisors (see below), whose sum is σ = 237316981524480. Its totient is φ = 189508925442960.

The previous prime is 213000012211967. The next prime is 213000012212017. The reversal of 213000012212009 is 900212210000312.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213000012212009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213000012212059) 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, 4869932 + ... + 21206514.

It is an arithmetic number, because the mean of its divisors is an integer number (14832311345280).

Almost surely, 2^{213000012212009} is an apocalyptic number.

It is an amenable number.

213000012212009 is a deficient number, since it is larger than the sum of its proper divisors (24316969312471).

213000012212009 is a wasteful number, since it uses less digits than its factorization.

213000012212009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16361860.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 213000012212009 in words is "two hundred thirteen trillion, twelve million, two hundred twelve thousand, nine".