100001020001211 has 48 divisors (see below), whose sum is σ = 169548305891328. Its totient is φ = 55597183963200.

The previous prime is 100001020001203. The next prime is 100001020001227. The reversal of 100001020001211 is 112100020100001.

It is a happy number.

It is not a de Polignac number, because 100001020001211 - 2³ = 100001020001203 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 = 100001020001193 and 100001020001202.

It is not an unprimeable number, because it can be changed into a prime (100001020001231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71359606 + ... + 72747476.

It is an arithmetic number, because the mean of its divisors is an integer number (3532256372736).

Almost surely, 2^{100001020001211} is an apocalyptic number.

100001020001211 is a deficient number, since it is larger than the sum of its proper divisors (69547285890117).

100001020001211 is a wasteful number, since it uses less digits than its factorization.

100001020001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418832 (or 1418829 counting only the distinct ones).

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

Adding to 100001020001211 its reverse (112100020100001), we get a palindrome (212101040101212).

The spelling of 100001020001211 in words is "one hundred trillion, one billion, twenty million, one thousand, two hundred eleven".