1000100212011 has 16 divisors (see below), whose sum is σ = 1481697361920. Its totient is φ = 666703136520.

The previous prime is 1000100211947. The next prime is 1000100212019. The reversal of 1000100212011 is 1102120010001.

It is a happy number.

It is not a de Polignac number, because 1000100212011 - 2⁶ = 1000100211947 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1000100211984 and 1000100212002.

It is not an unprimeable number, because it can be changed into a prime (1000100212019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230275 + ... + 1432908.

It is an arithmetic number, because the mean of its divisors is an integer number (92606085120).

Almost surely, 2^{1000100212011} is an apocalyptic number.

1000100212011 is a deficient number, since it is larger than the sum of its proper divisors (481597149909).

1000100212011 is a wasteful number, since it uses less digits than its factorization.

1000100212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685463 (or 1685457 counting only the distinct ones).

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

Adding to 1000100212011 its reverse (1102120010001), we get a palindrome (2102220222012).

The spelling of 1000100212011 in words is "one trillion, one hundred million, two hundred twelve thousand, eleven".