21101232101211 has 48 divisors (see below), whose sum is σ = 31616955135168. Its totient is φ = 13550185440000.

The previous prime is 21101232101179. The next prime is 21101232101267. The reversal of 21101232101211 is 11210123210112.

It is a happy number.

21101232101211 is a `hidden beast` number, since 21 + 101 + 232 + 101 + 211 = 666.

It is not a de Polignac number, because 21101232101211 - 2⁵ = 21101232101179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21101232102211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 332968650 + ... + 333032016.

It is an arithmetic number, because the mean of its divisors is an integer number (658686565316).

Almost surely, 2^{21101232101211} is an apocalyptic number.

21101232101211 is a deficient number, since it is larger than the sum of its proper divisors (10515723033957).

21101232101211 is a wasteful number, since it uses less digits than its factorization.

21101232101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73412 (or 73409 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 21101232101211 its reverse (11210123210112), we get a palindrome (32311355311323).

The spelling of 21101232101211 in words is "twenty-one trillion, one hundred one billion, two hundred thirty-two million, one hundred one thousand, two hundred eleven".