9502001221 has 4 divisors (see below), whose sum is σ = 9511532812. Its totient is φ = 9492469632.

The previous prime is 9502001167. The next prime is 9502001227. The reversal of 9502001221 is 1221002059.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9121205025 + 380796196 = 95505^2 + 19514^2 .

It is a cyclic number.

It is not a de Polignac number, because 9502001221 - 2¹³ = 9501993029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9502001192 and 9502001201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9502001227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4764300 + ... + 4766293.

It is an arithmetic number, because the mean of its divisors is an integer number (2377883203).

Almost surely, 2^9502001221 is an apocalyptic number.

It is an amenable number.

9502001221 is a deficient number, since it is larger than the sum of its proper divisors (9531591).

9502001221 is an equidigital number, since it uses as much as digits as its factorization.

9502001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9531590.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 9502001221 is about 97478.2089546171. The cubic root of 9502001221 is about 2118.0604978108.

The spelling of 9502001221 in words is "nine billion, five hundred two million, one thousand, two hundred twenty-one".