331201211020220 has 24 divisors (see below), whose sum is σ = 736435633916304. Its totient is φ = 124687514736896.

The previous prime is 331201211020201. The next prime is 331201211020261. The reversal of 331201211020220 is 22020112102133.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 331201211020192 and 331201211020201.

It is a congruent number.

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, 487060604102 + ... + 487060604781.

It is an arithmetic number, because the mean of its divisors is an integer number (30684818079846).

Almost surely, 2^{331201211020220} is an apocalyptic number.

It is an amenable number.

331201211020220 is an abundant number, since it is smaller than the sum of its proper divisors (405234422896084).

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

331201211020220 is a wasteful number, since it uses less digits than its factorization.

331201211020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974121208909 (or 974121208907 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 331201211020220 its reverse (22020112102133), we get a palindrome (353221323122353).

The spelling of 331201211020220 in words is "three hundred thirty-one trillion, two hundred one billion, two hundred eleven million, twenty thousand, two hundred twenty".