20031322120 has 32 divisors (see below), whose sum is σ = 45127814400. Its totient is φ = 8002335168.

The previous prime is 20031322099. The next prime is 20031322133. The reversal of 20031322120 is 2122313002.

It is a junction number, because it is equal to n+sod(n) for n = 20031322094 and 20031322103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286680 + ... + 349639.

It is an arithmetic number, because the mean of its divisors is an integer number (1410244200).

Almost surely, 2^20031322120 is an apocalyptic number.

20031322120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20031322120 is an abundant number, since it is smaller than the sum of its proper divisors (25096492280).

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

20031322120 is a wasteful number, since it uses less digits than its factorization.

20031322120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637117 (or 637113 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20031322120 its reverse (2122313002), we get a palindrome (22153635122).

The spelling of 20031322120 in words is "twenty billion, thirty-one million, three hundred twenty-two thousand, one hundred twenty".