21232111101 has 16 divisors (see below), whose sum is σ = 28716996480. Its totient is φ = 13951249920.

The previous prime is 21232111091. The next prime is 21232111111. The reversal of 21232111101 is 10111123212.

It is an interprime number because it is at equal distance from previous prime (21232111091) and next prime (21232111111).

It is not a de Polignac number, because 21232111101 - 2⁶ = 21232111037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232111111) 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 15 ways as a sum of consecutive naturals, for example, 293536 + ... + 358646.

It is an arithmetic number, because the mean of its divisors is an integer number (1794812280).

Almost surely, 2^21232111101 is an apocalyptic number.

It is an amenable number.

21232111101 is a deficient number, since it is larger than the sum of its proper divisors (7484885379).

21232111101 is a wasteful number, since it uses less digits than its factorization.

21232111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66676.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21232111101 its reverse (10111123212), we get a palindrome (31343234313).

The spelling of 21232111101 in words is "twenty-one billion, two hundred thirty-two million, one hundred eleven thousand, one hundred one".