1221324040232 has 8 divisors (see below), whose sum is σ = 2289982575450. Its totient is φ = 610662020112.

The previous prime is 1221324040213. The next prime is 1221324040241. The reversal of 1221324040232 is 2320404231221.

It can be written as a sum of positive squares in only one way, i.e., 1194880727236 + 26443312996 = 1093106^2 + 162614^2 .

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

It is a super-2 number, since 2×1221324040232² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76332752507 + ... + 76332752522.

Almost surely, 2^{1221324040232} is an apocalyptic number.

It is an amenable number.

1221324040232 is a deficient number, since it is larger than the sum of its proper divisors (1068658535218).

1221324040232 is a wasteful number, since it uses less digits than its factorization.

1221324040232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152665505035 (or 152665505031 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1221324040232 its reverse (2320404231221), we get a palindrome (3541728271453).

The spelling of 1221324040232 in words is "one trillion, two hundred twenty-one billion, three hundred twenty-four million, forty thousand, two hundred thirty-two".