1233421216 has 48 divisors (see below), whose sum is σ = 2459346624. Its totient is φ = 608871424.

The previous prime is 1233421193. The next prime is 1233421237. The reversal of 1233421216 is 6121243321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1254261 + ... + 1255243.

It is an arithmetic number, because the mean of its divisors is an integer number (51236388).

Almost surely, 2^1233421216 is an apocalyptic number.

1233421216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1233421216 is a deficient number, since it is larger than the sum of its proper divisors (1225925408).

1233421216 is a wasteful number, since it uses less digits than its factorization.

1233421216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453 (or 1445 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 1233421216 is about 35120.0970385903. The cubic root of 1233421216 is about 1072.4337462853.

Adding to 1233421216 its reverse (6121243321), we get a palindrome (7354664537).

The spelling of 1233421216 in words is "one billion, two hundred thirty-three million, four hundred twenty-one thousand, two hundred sixteen".