1221330200232 has 32 divisors (see below), whose sum is σ = 3053836363680. Its totient is φ = 407041951680.

The previous prime is 1221330200231. The next prime is 1221330200249. The reversal of 1221330200232 is 2320020331221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1221330200199 and 1221330200208.

It is not an unprimeable number, because it can be changed into a prime (1221330200231) 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, 4110658 + ... + 4397745.

It is an arithmetic number, because the mean of its divisors is an integer number (95432386365).

Almost surely, 2^{1221330200232} is an apocalyptic number.

1221330200232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221330200232 is an abundant number, since it is smaller than the sum of its proper divisors (1832506163448).

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

1221330200232 is a wasteful number, since it uses less digits than its factorization.

1221330200232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8514393 (or 8514389 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1221330200232 its reverse (2320020331221), we get a palindrome (3541350531453).

The spelling of 1221330200232 in words is "one trillion, two hundred twenty-one billion, three hundred thirty million, two hundred thousand, two hundred thirty-two".