1031121022240 has 24 divisors (see below), whose sum is σ = 2436023415420. Its totient is φ = 412448408832.

The previous prime is 1031121022237. The next prime is 1031121022249. The reversal of 1031121022240 is 422201211301.

It can be written as a sum of positive squares in 2 ways, for example, as 898802594704 + 132318427536 = 948052^2 + 363756^2 .

It is not an unprimeable number, because it can be changed into a prime (1031121022249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3222253035 + ... + 3222253354.

Almost surely, 2^{1031121022240} is an apocalyptic number.

1031121022240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031121022240 is an abundant number, since it is smaller than the sum of its proper divisors (1404902393180).

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

1031121022240 is an equidigital number, since it uses as much as digits as its factorization.

1031121022240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6444506404 (or 6444506396 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1031121022240 its reverse (422201211301), we get a palindrome (1453322233541).

The spelling of 1031121022240 in words is "one trillion, thirty-one billion, one hundred twenty-one million, twenty-two thousand, two hundred forty".