949999902221 has 16 divisors (see below), whose sum is σ = 994813498800. Its totient is φ = 906881586624.

The previous prime is 949999902191. The next prime is 949999902289. The reversal of 949999902221 is 122209999949.

It can be written as a sum of positive squares in 8 ways, for example, as 189563581321 + 760436320900 = 435389^2 + 872030^2 .

It is not a de Polignac number, because 949999902221 - 2⁶ = 949999902157 is a prime.

It is a super-3 number, since 3×949999902221³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (949999902421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2507675 + ... + 2861543.

It is an arithmetic number, because the mean of its divisors is an integer number (62175843675).

Almost surely, 2^949999902221 is an apocalyptic number.

It is an amenable number.

949999902221 is a deficient number, since it is larger than the sum of its proper divisors (44813596579).

949999902221 is an frugal number, since it uses more digits than its factorization.

949999902221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354033 (or 353959 counting only the distinct ones).

The product of its (nonzero) digits is 17006112, while the sum is 65.

The spelling of 949999902221 in words is "nine hundred forty-nine billion, nine hundred ninety-nine million, nine hundred two thousand, two hundred twenty-one".