10011201212221 has 48 divisors (see below), whose sum is σ = 11620927987200. Its totient is φ = 8594053776000.

The previous prime is 10011201212213. The next prime is 10011201212227. The reversal of 10011201212221 is 12221210211001.

It is not a de Polignac number, because 10011201212221 - 2³ = 10011201212213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10011201212195 and 10011201212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011201212227) 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, 1036244131 + ... + 1036253791.

It is an arithmetic number, because the mean of its divisors is an integer number (242102666400).

Almost surely, 2^{10011201212221} is an apocalyptic number.

10011201212221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10011201212221 is a deficient number, since it is larger than the sum of its proper divisors (1609726774979).

10011201212221 is a wasteful number, since it uses less digits than its factorization.

10011201212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11122 (or 11111 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10011201212221 its reverse (12221210211001), we get a palindrome (22232411423222).

The spelling of 10011201212221 in words is "ten trillion, eleven billion, two hundred one million, two hundred twelve thousand, two hundred twenty-one".