2221310431020 has 48 divisors (see below), whose sum is σ = 6276730410720. Its totient is φ = 586915047936.

The previous prime is 2221310431019. The next prime is 2221310431027. The reversal of 2221310431020 is 201340131222.

It is not an unprimeable number, because it can be changed into a prime (2221310431027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169818417 + ... + 169831496.

It is an arithmetic number, because the mean of its divisors is an integer number (130765216890).

Almost surely, 2^{2221310431020} is an apocalyptic number.

2221310431020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221310431020 is an abundant number, since it is smaller than the sum of its proper divisors (4055419979700).

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

2221310431020 is a wasteful number, since it uses less digits than its factorization.

2221310431020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339650034 (or 339650032 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2221310431020 its reverse (201340131222), we get a palindrome (2422650562242).

The spelling of 2221310431020 in words is "two trillion, two hundred twenty-one billion, three hundred ten million, four hundred thirty-one thousand, twenty".