10221099982 has 4 divisors (see below), whose sum is σ = 15331649976. Its totient is φ = 5110549990.

The previous prime is 10221099971. The next prime is 10221099983. The reversal of 10221099982 is 28999012201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28999012201 = 25409 ⋅1141289.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221099983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555274994 + ... + 2555274997.

It is an arithmetic number, because the mean of its divisors is an integer number (3832912494).

Almost surely, 2^10221099982 is an apocalyptic number.

10221099982 is a deficient number, since it is larger than the sum of its proper divisors (5110549994).

10221099982 is an equidigital number, since it uses as much as digits as its factorization.

10221099982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110549993.

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 10221099982 in words is "ten billion, two hundred twenty-one million, ninety-nine thousand, nine hundred eighty-two".