21013303203011 has 16 divisors (see below), whose sum is σ = 24031916436480. Its totient is φ = 17998871042880.

The previous prime is 21013303203007. The next prime is 21013303203029. The reversal of 21013303203011 is 11030230331012.

It is not a de Polignac number, because 21013303203011 - 2² = 21013303203007 is a prime.

It is a super-2 number, since 2×21013303203011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21013303203041) 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, 90867350 + ... + 91098308.

It is an arithmetic number, because the mean of its divisors is an integer number (1501994777280).

Almost surely, 2^{21013303203011} is an apocalyptic number.

21013303203011 is a deficient number, since it is larger than the sum of its proper divisors (3018613233469).

21013303203011 is a wasteful number, since it uses less digits than its factorization.

21013303203011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239954.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21013303203011 its reverse (11030230331012), we get a palindrome (32043533534023).

The spelling of 21013303203011 in words is "twenty-one trillion, thirteen billion, three hundred three million, two hundred three thousand, eleven".