1331102221020 has 192 divisors, whose sum is σ = 4865194414080. Its totient is φ = 297869011200.

The previous prime is 1331102220967. The next prime is 1331102221021. The reversal of 1331102221020 is 201222011331.

1331102221020 is a `hidden beast` number, since 1 + 331 + 10 + 222 + 102 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1331102220984 and 1331102221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331102221021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8541676 + ... + 8696115.

It is an arithmetic number, because the mean of its divisors is an integer number (25339554240).

Almost surely, 2^{1331102221020} is an apocalyptic number.

1331102221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331102221020 is an abundant number, since it is smaller than the sum of its proper divisors (3534092193060).

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

1331102221020 is a wasteful number, since it uses less digits than its factorization.

1331102221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17237833 (or 17237825 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1331102221020 its reverse (201222011331), we get a palindrome (1532324232351).

The spelling of 1331102221020 in words is "one trillion, three hundred thirty-one billion, one hundred two million, two hundred twenty-one thousand, twenty".