1051321218 has 16 divisors (see below), whose sum is σ = 2117771040. Its totient is φ = 347918976.

The previous prime is 1051321213. The next prime is 1051321231. The reversal of 1051321218 is 8121231501.

It is a super-2 number, since 2×1051321218² = 2210552606834007048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051321213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629455 + ... + 631122.

It is an arithmetic number, because the mean of its divisors is an integer number (132360690).

Almost surely, 2^1051321218 is an apocalyptic number.

1051321218 is an abundant number, since it is smaller than the sum of its proper divisors (1066449822).

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

1051321218 is a wasteful number, since it uses less digits than its factorization.

1051321218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260721.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 1051321218 is about 32424.0839192104. The cubic root of 1051321218 is about 1016.8224896100.

Adding to 1051321218 its reverse (8121231501), we get a palindrome (9172552719).

The spelling of 1051321218 in words is "one billion, fifty-one million, three hundred twenty-one thousand, two hundred eighteen".