21020211200013 has 16 divisors (see below), whose sum is σ = 28070077089600. Its totient is φ = 13991912785664.

The previous prime is 21020211199993. The next prime is 21020211200017. The reversal of 21020211200013 is 31000211202012.

It is a cyclic number.

It is not a de Polignac number, because 21020211200013 - 2¹³ = 21020211191821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21020211199965 and 21020211200001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020211200017) 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, 27590995 + ... + 28342607.

It is an arithmetic number, because the mean of its divisors is an integer number (1754379818100).

Almost surely, 2^{21020211200013} is an apocalyptic number.

It is an amenable number.

21020211200013 is a deficient number, since it is larger than the sum of its proper divisors (7049865889587).

21020211200013 is a wasteful number, since it uses less digits than its factorization.

21020211200013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765948.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21020211200013 its reverse (31000211202012), we get a palindrome (52020422402025).

The spelling of 21020211200013 in words is "twenty-one trillion, twenty billion, two hundred eleven million, two hundred thousand, thirteen".