21113132101 has 16 divisors (see below), whose sum is σ = 22459824000. Its totient is φ = 19790604288.

The previous prime is 21113132093. The next prime is 21113132107. The reversal of 21113132101 is 10123131112.

It is a happy number.

It is not a de Polignac number, because 21113132101 - 2³ = 21113132093 is a prime.

It is a super-2 number, since 2×21113132101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113132107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1277845 + ... + 1294261.

It is an arithmetic number, because the mean of its divisors is an integer number (1403739000).

Almost surely, 2^21113132101 is an apocalyptic number.

It is an amenable number.

21113132101 is a deficient number, since it is larger than the sum of its proper divisors (1346691899).

21113132101 is a wasteful number, since it uses less digits than its factorization.

21113132101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17148.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21113132101 its reverse (10123131112), we get a palindrome (31236263213).

The spelling of 21113132101 in words is "twenty-one billion, one hundred thirteen million, one hundred thirty-two thousand, one hundred one".