2100021201011 has 8 divisors (see below), whose sum is σ = 2223580793904. Its totient is φ = 1976464823040.

The previous prime is 2100021200993. The next prime is 2100021201101. The reversal of 2100021201011 is 1101021200012.

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 2100021201011 - 2³⁴ = 2082841331827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100021200983 and 2100021201001.

It is not an unprimeable number, because it can be changed into a prime (2100021201511) 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 7 ways as a sum of consecutive naturals, for example, 612431 + ... + 2138951.

It is an arithmetic number, because the mean of its divisors is an integer number (277947599238).

Almost surely, 2^{2100021201011} is an apocalyptic number.

2100021201011 is a deficient number, since it is larger than the sum of its proper divisors (123559592893).

2100021201011 is a wasteful number, since it uses less digits than its factorization.

2100021201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607461.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2100021201011 its reverse (1101021200012), we get a palindrome (3201042401023).

Subtracting from 2100021201011 its reverse (1101021200012), we obtain a palindrome (999000000999).

It can be divided in two parts, 2100021 and 201011, that added together give a palindrome (2301032).

The spelling of 2100021201011 in words is "two trillion, one hundred billion, twenty-one million, two hundred one thousand, eleven".