221300210021031 has 32 divisors (see below), whose sum is σ = 335809117952000. Its totient is φ = 143959644468864.

The previous prime is 221300210020997. The next prime is 221300210021069. The reversal of 221300210021031 is 130120012003122.

221300210021031 is a `hidden beast` number, since 2 + 21 + 300 + 2 + 100 + 210 + 31 = 666.

It is not a de Polignac number, because 221300210021031 - 2¹⁷ = 221300209889959 is a prime.

It is a super-2 number, since 2×221300210021031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221300210020995 and 221300210021013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221300210021081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93284311 + ... + 95627208.

It is an arithmetic number, because the mean of its divisors is an integer number (10494034936000).

Almost surely, 2^{221300210021031} is an apocalyptic number.

221300210021031 is a deficient number, since it is larger than the sum of its proper divisors (114508907930969).

221300210021031 is a wasteful number, since it uses less digits than its factorization.

221300210021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188912580 (or 188912574 counting only the distinct ones).

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

Adding to 221300210021031 its reverse (130120012003122), we get a palindrome (351420222024153).

The spelling of 221300210021031 in words is "two hundred twenty-one trillion, three hundred billion, two hundred ten million, twenty-one thousand, thirty-one".