2101042201221 has 32 divisors (see below), whose sum is σ = 3114977264640. Its totient is φ = 1399650318000.

The previous prime is 2101042201211. The next prime is 2101042201243. The reversal of 2101042201221 is 1221022401012.

2101042201221 is a `hidden beast` number, since 2 + 10 + 10 + 422 + 0 + 1 + 221 = 666.

It is not a de Polignac number, because 2101042201221 - 2¹¹ = 2101042199173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101042201194 and 2101042201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101042201211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 371797246 + ... + 371802896.

It is an arithmetic number, because the mean of its divisors is an integer number (97343039520).

Almost surely, 2^{2101042201221} is an apocalyptic number.

It is an amenable number.

2101042201221 is a deficient number, since it is larger than the sum of its proper divisors (1013935063419).

2101042201221 is a wasteful number, since it uses less digits than its factorization.

2101042201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13494 (or 13488 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2101042201221 its reverse (1221022401012), we get a palindrome (3322064602233).

The spelling of 2101042201221 in words is "two trillion, one hundred one billion, forty-two million, two hundred one thousand, two hundred twenty-one".