20212321131030 has 128 divisors (see below), whose sum is σ = 56031711068160. Its totient is φ = 4570811683200.

The previous prime is 20212321131017. The next prime is 20212321131047. The reversal of 20212321131030 is 3013112321202.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20212321130988 and 20212321131006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8519005 + ... + 10630055.

It is an arithmetic number, because the mean of its divisors is an integer number (437747742720).

Almost surely, 2^{20212321131030} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20212321131030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28015855534080).

20212321131030 is an abundant number, since it is smaller than the sum of its proper divisors (35819389937130).

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

20212321131030 is a wasteful number, since it uses less digits than its factorization.

20212321131030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111554.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20212321131030 its reverse (3013112321202), we get a palindrome (23225433452232).

The spelling of 20212321131030 in words is "twenty trillion, two hundred twelve billion, three hundred twenty-one million, one hundred thirty-one thousand, thirty".