10221132501 has 20 divisors (see below), whose sum is σ = 15292429152. Its totient is φ = 6803456328.

The previous prime is 10221132463. The next prime is 10221132503. The reversal of 10221132501 is 10523112201.

10221132501 is a `hidden beast` number, since 10 + 2 + 21 + 132 + 501 = 666.

It is not a de Polignac number, because 10221132501 - 2¹⁹ = 10220608213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221132503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 46041 + ... + 150206.

Almost surely, 2^10221132501 is an apocalyptic number.

It is an amenable number.

10221132501 is a deficient number, since it is larger than the sum of its proper divisors (5071296651).

10221132501 is an equidigital number, since it uses as much as digits as its factorization.

10221132501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196902 (or 196893 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 10221132501 its reverse (10523112201), we get a palindrome (20744244702).

The spelling of 10221132501 in words is "ten billion, two hundred twenty-one million, one hundred thirty-two thousand, five hundred one".