1001210201100 has 144 divisors (see below), whose sum is σ = 3219039697440. Its totient is φ = 266961657600.

The previous prime is 1001210201023. The next prime is 1001210201143. The reversal of 1001210201100 is 11020121001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51671014 + ... + 51690386.

Almost surely, 2^{1001210201100} is an apocalyptic number.

1001210201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001210201100 is an abundant number, since it is smaller than the sum of its proper divisors (2217829496340).

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

1001210201100 is a wasteful number, since it uses less digits than its factorization.

1001210201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38537 (or 38524 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1001210201100 its reverse (11020121001), we get a palindrome (1012230322101).

The spelling of 1001210201100 in words is "one trillion, one billion, two hundred ten million, two hundred one thousand, one hundred".