20331121302030 has 64 divisors (see below), whose sum is σ = 60834939591168. Its totient is φ = 4224648581760.

The previous prime is 20331121302001. The next prime is 20331121302067. The reversal of 20331121302030 is 3020312113302.

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 = 20331121301988 and 20331121302006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4400673297 + ... + 4400677916.

It is an arithmetic number, because the mean of its divisors is an integer number (950545931112).

Almost surely, 2^{20331121302030} is an apocalyptic number.

20331121302030 is an abundant number, since it is smaller than the sum of its proper divisors (40503818289138).

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

20331121302030 is a wasteful number, since it uses less digits than its factorization.

20331121302030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8801351241.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20331121302030 its reverse (3020312113302), we get a palindrome (23351433415332).

The spelling of 20331121302030 in words is "twenty trillion, three hundred thirty-one billion, one hundred twenty-one million, three hundred two thousand, thirty".