21220300131030 has 256 divisors, whose sum is σ = 75977579059200. Its totient is φ = 4070227345920.

The previous prime is 21220300131029. The next prime is 21220300131059. The reversal of 21220300131030 is 3013100302212.

21220300131030 is a `hidden beast` number, since 2 + 1 + 2 + 20 + 300 + 1 + 310 + 30 = 666.

It is a super-2 number, since 2×21220300131030² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21220300130994 and 21220300131012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 38987325 + ... + 39527864.

It is an arithmetic number, because the mean of its divisors is an integer number (296787418200).

Almost surely, 2^{21220300131030} is an apocalyptic number.

21220300131030 is an abundant number, since it is smaller than the sum of its proper divisors (54757278928170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21220300131030 is a wasteful number, since it uses less digits than its factorization.

21220300131030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78515236 (or 78515230 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21220300131030 its reverse (3013100302212), we get a palindrome (24233400433242).

The spelling of 21220300131030 in words is "twenty-one trillion, two hundred twenty billion, three hundred million, one hundred thirty-one thousand, thirty".