1221230212332 has 24 divisors (see below), whose sum is σ = 3068732328816. Its totient is φ = 375763142208.

The previous prime is 1221230212313. The next prime is 1221230212337. The reversal of 1221230212332 is 2332120321221.

It is not an unprimeable number, because it can be changed into a prime (1221230212337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3914199243 + ... + 3914199554.

It is an arithmetic number, because the mean of its divisors is an integer number (127863847034).

Almost surely, 2^{1221230212332} is an apocalyptic number.

1221230212332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221230212332 is an abundant number, since it is smaller than the sum of its proper divisors (1847502116484).

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

1221230212332 is a wasteful number, since it uses less digits than its factorization.

1221230212332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7828398817 (or 7828398815 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1221230212332 its reverse (2332120321221), we get a palindrome (3553350533553).

The spelling of 1221230212332 in words is "one trillion, two hundred twenty-one billion, two hundred thirty million, two hundred twelve thousand, three hundred thirty-two".