1321210472 has 8 divisors (see below), whose sum is σ = 2477269650. Its totient is φ = 660605232.

The previous prime is 1321210469. The next prime is 1321210489. The reversal of 1321210472 is 2740121231.

It can be written as a sum of positive squares in only one way, i.e., 1033365316 + 287845156 = 32146^2 + 16966^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1321210472² = 3491194222644925568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82575647 + ... + 82575662.

Almost surely, 2^1321210472 is an apocalyptic number.

It is an amenable number.

1321210472 is a deficient number, since it is larger than the sum of its proper divisors (1156059178).

1321210472 is a wasteful number, since it uses less digits than its factorization.

1321210472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165151315 (or 165151311 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1321210472 is about 36348.4590044750. The cubic root of 1321210472 is about 1097.2965214135.

The spelling of 1321210472 in words is "one billion, three hundred twenty-one million, two hundred ten thousand, four hundred seventy-two".