1000213122 has 32 divisors (see below), whose sum is σ = 2169768384. Its totient is φ = 306137600.

The previous prime is 1000213087. The next prime is 1000213129. The reversal of 1000213122 is 2213120001.

It is a junction number, because it is equal to n+sod(n) for n = 1000213098 and 1000213107.

It is not an unprimeable number, because it can be changed into a prime (1000213129) 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, 115404 + ... + 123767.

It is an arithmetic number, because the mean of its divisors is an integer number (67805262).

Almost surely, 2^1000213122 is an apocalyptic number.

1000213122 is an abundant number, since it is smaller than the sum of its proper divisors (1169555262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000213122 is a wasteful number, since it uses less digits than its factorization.

1000213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239234.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1000213122 is about 31626.1461768582. The cubic root of 1000213122 is about 1000.0710356205.

Adding to 1000213122 its reverse (2213120001), we get a palindrome (3213333123).

The spelling of 1000213122 in words is "one billion, two hundred thirteen thousand, one hundred twenty-two".