1211100002101 has 8 divisors (see below), whose sum is σ = 1321225706304. Its totient is φ = 1100978581920.

The previous prime is 1211100002089. The next prime is 1211100002117. The reversal of 1211100002101 is 1012000011121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211100002101 - 2⁵ = 1211100002069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211100002171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464985 + ... + 1624318.

It is an arithmetic number, because the mean of its divisors is an integer number (165153213288).

Almost surely, 2^{1211100002101} is an apocalyptic number.

1211100002101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1211100002101 is a deficient number, since it is larger than the sum of its proper divisors (110125704203).

1211100002101 is a wasteful number, since it uses less digits than its factorization.

1211100002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142011.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1211100002101 its reverse (1012000011121), we get a palindrome (2223100013222).

The spelling of 1211100002101 in words is "one trillion, two hundred eleven billion, one hundred million, two thousand, one hundred one".