1000013122 has 4 divisors (see below), whose sum is σ = 1500019686. Its totient is φ = 500006560.

The previous prime is 1000013107. The next prime is 1000013137. The reversal of 1000013122 is 2213100001.

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

It is an interprime number because it is at equal distance from previous prime (1000013107) and next prime (1000013137).

It can be written as a sum of positive squares in only one way, i.e., 946854441 + 53158681 = 30771^2 + 7291^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1000013099 and 1000013108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250003279 + ... + 250003282.

Almost surely, 2^1000013122 is an apocalyptic number.

1000013122 is a deficient number, since it is larger than the sum of its proper divisors (500006564).

1000013122 is an equidigital number, since it uses as much as digits as its factorization.

1000013122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500006563.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1000013122 is about 31622.9840780405. The cubic root of 1000013122 is about 1000.0043739809.

Adding to 1000013122 its reverse (2213100001), we get a palindrome (3213113123).

The spelling of 1000013122 in words is "one billion, thirteen thousand, one hundred twenty-two".