21113000101 has 2 divisors, whose sum is σ = 21113000102. Its totient is φ = 21113000100.

The previous prime is 21113000087. The next prime is 21113000107. The reversal of 21113000101 is 10100031112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20228235076 + 884765025 = 142226^2 + 29745^2 .

It is a cyclic number.

It is not a de Polignac number, because 21113000101 - 2²⁷ = 20978782373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21113000107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556500050 + 10556500051.

It is an arithmetic number, because the mean of its divisors is an integer number (10556500051).

Almost surely, 2^21113000101 is an apocalyptic number.

It is an amenable number.

21113000101 is a deficient number, since it is larger than the sum of its proper divisors (1).

21113000101 is an equidigital number, since it uses as much as digits as its factorization.

21113000101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 21113000101 its reverse (10100031112), we get a palindrome (31213031213).

The spelling of 21113000101 in words is "twenty-one billion, one hundred thirteen million, one hundred one", and thus it is an aban number.