213321022101 has 48 divisors (see below), whose sum is σ = 338442242112. Its totient is φ = 128401977600.

The previous prime is 213321022099. The next prime is 213321022111. The reversal of 213321022101 is 101220123312.

213321022101 is a `hidden beast` number, since 21 + 332 + 102 + 210 + 1 = 666.

It is not a de Polignac number, because 213321022101 - 2¹ = 213321022099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213321022111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28284391 + ... + 28291931.

It is an arithmetic number, because the mean of its divisors is an integer number (7050880044).

Almost surely, 2^213321022101 is an apocalyptic number.

It is an amenable number.

213321022101 is a deficient number, since it is larger than the sum of its proper divisors (125121220011).

213321022101 is a wasteful number, since it uses less digits than its factorization.

213321022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9474 (or 9471 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 213321022101 its reverse (101220123312), we get a palindrome (314541145413).

The spelling of 213321022101 in words is "two hundred thirteen billion, three hundred twenty-one million, twenty-two thousand, one hundred one".