21011301130221 has 48 divisors (see below), whose sum is σ = 32175437830848. Its totient is φ = 13166949081600.

The previous prime is 21011301130217. The next prime is 21011301130241. The reversal of 21011301130221 is 12203110311012.

21011301130221 is a `hidden beast` number, since 2 + 1 + 0 + 11 + 301 + 130 + 221 = 666.

It is not a de Polignac number, because 21011301130221 - 2² = 21011301130217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21011301130194 and 21011301130203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011301130201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 942580086 + ... + 942602376.

It is an arithmetic number, because the mean of its divisors is an integer number (670321621476).

Almost surely, 2^{21011301130221} is an apocalyptic number.

It is an amenable number.

21011301130221 is a deficient number, since it is larger than the sum of its proper divisors (11164136700627).

21011301130221 is a wasteful number, since it uses less digits than its factorization.

21011301130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29802 (or 29799 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21011301130221 its reverse (12203110311012), we get a palindrome (33214411441233).

The spelling of 21011301130221 in words is "twenty-one trillion, eleven billion, three hundred one million, one hundred thirty thousand, two hundred twenty-one".