21000201002111 has 8 divisors (see below), whose sum is σ = 21550362377040. Its totient is φ = 20455740781632.

The previous prime is 21000201002041. The next prime is 21000201002129. The reversal of 21000201002111 is 11120010200012.

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 21000201002111 - 2¹⁸ = 21000200739967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21000201002092 and 21000201002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000201002161) 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, 1425281150 + ... + 1425295883.

It is an arithmetic number, because the mean of its divisors is an integer number (2693795297130).

Almost surely, 2^{21000201002111} is an apocalyptic number.

21000201002111 is a deficient number, since it is larger than the sum of its proper divisors (550161374929).

21000201002111 is a wasteful number, since it uses less digits than its factorization.

21000201002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850577225.

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

Adding to 21000201002111 its reverse (11120010200012), we get a palindrome (32120211202123).

The spelling of 21000201002111 in words is "twenty-one trillion, two hundred one million, two thousand, one hundred eleven".