1321144212 has 24 divisors (see below), whose sum is σ = 3154361056. Its totient is φ = 430139808.

The previous prime is 1321144211. The next prime is 1321144243. The reversal of 1321144212 is 2124411231.

It is a super-2 number, since 2×1321144212² = 3490844057802201888, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321144211) 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, 1279663 + ... + 1280694.

Almost surely, 2^1321144212 is an apocalyptic number.

1321144212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321144212 is an abundant number, since it is smaller than the sum of its proper divisors (1833216844).

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

1321144212 is a wasteful number, since it uses less digits than its factorization.

1321144212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560407 (or 2560405 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 1321144212 is about 36347.5475376262. The cubic root of 1321144212 is about 1097.2781776082.

Adding to 1321144212 its reverse (2124411231), we get a palindrome (3445555443).

The spelling of 1321144212 in words is "one billion, three hundred twenty-one million, one hundred forty-four thousand, two hundred twelve".