1031220240000 has 160 divisors (see below), whose sum is σ = 3422878578240. Its totient is φ = 274992000000.

The previous prime is 1031220239983. The next prime is 1031220240013. The reversal of 1031220240000 is 420221301.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1908376 + ... + 2388375.

It is an arithmetic number, because the mean of its divisors is an integer number (21392991114).

Almost surely, 2^{1031220240000} is an apocalyptic number.

1031220240000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031220240000 is an abundant number, since it is smaller than the sum of its proper divisors (2391658338240).

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

1031220240000 is an frugal number, since it uses more digits than its factorization.

1031220240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296788 (or 4296761 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 1031220240000 its reverse (420221301), we get a palindrome (1031640461301).

The spelling of 1031220240000 in words is "one trillion, thirty-one billion, two hundred twenty million, two hundred forty thousand".