213138880321 has 8 divisors (see below), whose sum is σ = 218104121664. Its totient is φ = 208174026480.

The previous prime is 213138880267. The next prime is 213138880391. The reversal of 213138880321 is 123088831312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 213138880321 - 2⁹ = 213138879809 is a prime.

It is a super-2 number, since 2×213138880321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213138880391) 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, 1222980 + ... + 1386346.

It is an arithmetic number, because the mean of its divisors is an integer number (27263015208).

Almost surely, 2^213138880321 is an apocalyptic number.

It is an amenable number.

213138880321 is a deficient number, since it is larger than the sum of its proper divisors (4965241343).

213138880321 is a wasteful number, since it uses less digits than its factorization.

213138880321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193751.

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 213138880321 in words is "two hundred thirteen billion, one hundred thirty-eight million, eight hundred eighty thousand, three hundred twenty-one".