21010110001013 has 16 divisors (see below), whose sum is σ = 25444354320000. Its totient is φ = 16935761995776.

The previous prime is 21010110001003. The next prime is 21010110001019. The reversal of 21010110001013 is 31010001101012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21010110001013 - 2⁸ = 21010110000757 is a prime.

It is a super-2 number, since 2×21010110001013² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21010110000985 and 21010110001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010110001019) 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, 70530131 + ... + 70827392.

It is an arithmetic number, because the mean of its divisors is an integer number (1590272145000).

Almost surely, 2^{21010110001013} is an apocalyptic number.

It is an amenable number.

21010110001013 is a deficient number, since it is larger than the sum of its proper divisors (4434244318987).

21010110001013 is a wasteful number, since it uses less digits than its factorization.

21010110001013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141358796.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 21010110001013 its reverse (31010001101012), we get a palindrome (52020111102025).

The spelling of 21010110001013 in words is "twenty-one trillion, ten billion, one hundred ten million, one thousand, thirteen".