1331023220100 has 144 divisors (see below), whose sum is σ = 4890277974400. Its totient is φ = 304233874560.

The previous prime is 1331023219921. The next prime is 1331023220143. The reversal of 1331023220100 is 10223201331.

1331023220100 is a `hidden beast` number, since 1 + 3 + 310 + 232 + 20 + 100 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35193355 + ... + 35231154.

Almost surely, 2^{1331023220100} is an apocalyptic number.

1331023220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331023220100 is an abundant number, since it is smaller than the sum of its proper divisors (3559254754300).

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

1331023220100 is a wasteful number, since it uses less digits than its factorization.

1331023220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70424539 (or 70424526 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1331023220100 its reverse (10223201331), we get a palindrome (1341246421431).

The spelling of 1331023220100 in words is "one trillion, three hundred thirty-one billion, twenty-three million, two hundred twenty thousand, one hundred".