1211223100232 has 8 divisors (see below), whose sum is σ = 2271043312950. Its totient is φ = 605611550112.

The previous prime is 1211223100201. The next prime is 1211223100259. The reversal of 1211223100232 is 2320013221121.

It can be written as a sum of positive squares in only one way, i.e., 1027170088036 + 184053012196 = 1013494^2 + 429014^2 .

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

It is a super-2 number, since 2×1211223100232² (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, 75701443757 + ... + 75701443772.

Almost surely, 2^{1211223100232} is an apocalyptic number.

It is an amenable number.

1211223100232 is a deficient number, since it is larger than the sum of its proper divisors (1059820212718).

1211223100232 is a wasteful number, since it uses less digits than its factorization.

1211223100232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151402887535 (or 151402887531 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1211223100232 its reverse (2320013221121), we get a palindrome (3531236321353).

The spelling of 1211223100232 in words is "one trillion, two hundred eleven billion, two hundred twenty-three million, one hundred thousand, two hundred thirty-two".