213321625501 has 8 divisors (see below), whose sum is σ = 214643245824. Its totient is φ = 212000532240.

The previous prime is 213321625421. The next prime is 213321625519. The reversal of 213321625501 is 105526123312.

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 213321625501 - 2¹¹ = 213321623453 is a prime.

It is a super-2 number, since 2×213321625501² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213321625541) 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, 696271 + ... + 954691.

It is an arithmetic number, because the mean of its divisors is an integer number (26830405728).

Almost surely, 2^213321625501 is an apocalyptic number.

It is an amenable number.

213321625501 is a deficient number, since it is larger than the sum of its proper divisors (1321620323).

213321625501 is a wasteful number, since it uses less digits than its factorization.

213321625501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263531.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 213321625501 its reverse (105526123312), we get a palindrome (318847748813).

The spelling of 213321625501 in words is "two hundred thirteen billion, three hundred twenty-one million, six hundred twenty-five thousand, five hundred one".