1221420248332 has 36 divisors (see below), whose sum is σ = 2324906252760. Its totient is φ = 559903985280.

The previous prime is 1221420248329. The next prime is 1221420248333. The reversal of 1221420248332 is 2338420241221.

It is not an unprimeable number, because it can be changed into a prime (1221420248333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8288733 + ... + 8434804.

Almost surely, 2^{1221420248332} is an apocalyptic number.

It is an amenable number.

1221420248332 is a deficient number, since it is larger than the sum of its proper divisors (1103486004428).

1221420248332 is a wasteful number, since it uses less digits than its factorization.

1221420248332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16723622 (or 16723589 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

Adding to 1221420248332 its reverse (2338420241221), we get a palindrome (3559840489553).

The spelling of 1221420248332 in words is "one trillion, two hundred twenty-one billion, four hundred twenty million, two hundred forty-eight thousand, three hundred thirty-two".