1010001212100 has 72 divisors (see below), whose sum is σ = 3246966868320. Its totient is φ = 269333655840.

The previous prime is 1010001212081. The next prime is 1010001212107. The reversal of 1010001212100 is 12121000101.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1010001212107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187034562 + ... + 187039961.

It is an arithmetic number, because the mean of its divisors is an integer number (45096762060).

Almost surely, 2^{1010001212100} is an apocalyptic number.

1010001212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010001212100 is an abundant number, since it is smaller than the sum of its proper divisors (2236965656220).

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

1010001212100 is a wasteful number, since it uses less digits than its factorization.

1010001212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374074546 (or 374074533 counting only the distinct ones).

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

Adding to 1010001212100 its reverse (12121000101), we get a palindrome (1022122212201).

The spelling of 1010001212100 in words is "one trillion, ten billion, one million, two hundred twelve thousand, one hundred".