1021231011320 has 32 divisors (see below), whose sum is σ = 2474521297920. Its totient is φ = 377069911680.

The previous prime is 1021231011289. The next prime is 1021231011347. The reversal of 1021231011320 is 231101321201.

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, 981952376 + ... + 981953415.

It is an arithmetic number, because the mean of its divisors is an integer number (77328790560).

Almost surely, 2^{1021231011320} is an apocalyptic number.

1021231011320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021231011320 is an abundant number, since it is smaller than the sum of its proper divisors (1453290286600).

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

1021231011320 is a wasteful number, since it uses less digits than its factorization.

1021231011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963905815 (or 1963905811 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1021231011320 its reverse (231101321201), we get a palindrome (1252332332521).

The spelling of 1021231011320 in words is "one trillion, twenty-one billion, two hundred thirty-one million, eleven thousand, three hundred twenty".