10221031132221 has 64 divisors (see below), whose sum is σ = 17678609786880. Its totient is φ = 5100950350080.

The previous prime is 10221031132217. The next prime is 10221031132237. The reversal of 10221031132221 is 12223113012201.

10221031132221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10221031132221 - 2² = 10221031132217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221031132211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2734966 + ... + 5284136.

It is an arithmetic number, because the mean of its divisors is an integer number (276228277920).

Almost surely, 2^{10221031132221} is an apocalyptic number.

It is an amenable number.

10221031132221 is a deficient number, since it is larger than the sum of its proper divisors (7457578654659).

10221031132221 is a wasteful number, since it uses less digits than its factorization.

10221031132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549986.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 10221031132221 its reverse (12223113012201), we get a palindrome (22444144144422).

The spelling of 10221031132221 in words is "ten trillion, two hundred twenty-one billion, thirty-one million, one hundred thirty-two thousand, two hundred twenty-one".