21101202020211 has 64 divisors (see below), whose sum is σ = 29743111157760. Its totient is φ = 13289537963520.

The previous prime is 21101202020191. The next prime is 21101202020267. The reversal of 21101202020211 is 11202020210112.

It is not a de Polignac number, because 21101202020211 - 2¹⁷ = 21101201889139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21101202010211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3302736205 + ... + 3302742593.

It is an arithmetic number, because the mean of its divisors is an integer number (464736111840).

Almost surely, 2^{21101202020211} is an apocalyptic number.

21101202020211 is a deficient number, since it is larger than the sum of its proper divisors (8641909137549).

21101202020211 is a wasteful number, since it uses less digits than its factorization.

21101202020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10476.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21101202020211 its reverse (11202020210112), we get a palindrome (32303222230323).

The spelling of 21101202020211 in words is "twenty-one trillion, one hundred one billion, two hundred two million, twenty thousand, two hundred eleven".