2100021210011 has 8 divisors (see below), whose sum is σ = 2121316554240. Its totient is φ = 2078743304232.

The previous prime is 2100021209971. The next prime is 2100021210061. The reversal of 2100021210011 is 1100121200012.

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 2100021210011 - 2¹⁸ = 2100020947867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100021209974 and 2100021210001.

It is not an unprimeable number, because it can be changed into a prime (2100021210061) 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, 4117475 + ... + 4599308.

It is an arithmetic number, because the mean of its divisors is an integer number (265164569280).

Almost surely, 2^{2100021210011} is an apocalyptic number.

2100021210011 is a deficient number, since it is larger than the sum of its proper divisors (21295344229).

2100021210011 is a wasteful number, since it uses less digits than its factorization.

2100021210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8719225.

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

Adding to 2100021210011 its reverse (1100121200012), we get a palindrome (3200142410023).

Subtracting from 2100021210011 its reverse (1100121200012), we obtain a palindrome (999900009999).

The spelling of 2100021210011 in words is "two trillion, one hundred billion, twenty-one million, two hundred ten thousand, eleven".