21011101201013 has 16 divisors (see below), whose sum is σ = 26212461649920. Its totient is φ = 16361784769200.

The previous prime is 21011101200997. The next prime is 21011101201021. The reversal of 21011101201013 is 31010210111012.

It is a cyclic number.

It is not a de Polignac number, because 21011101201013 - 2⁴ = 21011101200997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011101201033) 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, 87394853 + ... + 87634938.

It is an arithmetic number, because the mean of its divisors is an integer number (1638278853120).

Almost surely, 2^{21011101201013} is an apocalyptic number.

It is an amenable number.

21011101201013 is a deficient number, since it is larger than the sum of its proper divisors (5201360448907).

21011101201013 is a wasteful number, since it uses less digits than its factorization.

21011101201013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175031368.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 21011101201013 its reverse (31010210111012), we get a palindrome (52021311312025).

The spelling of 21011101201013 in words is "twenty-one trillion, eleven billion, one hundred one million, two hundred one thousand, thirteen".