1335021216 has 24 divisors (see below), whose sum is σ = 3504430944. Its totient is φ = 445007040.

The previous prime is 1335021197. The next prime is 1335021217. The reversal of 1335021216 is 6121205331.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1335021217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6953140 + ... + 6953331.

It is an arithmetic number, because the mean of its divisors is an integer number (146017956).

Almost surely, 2^1335021216 is an apocalyptic number.

1335021216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1335021216 is an abundant number, since it is smaller than the sum of its proper divisors (2169409728).

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

1335021216 is a wasteful number, since it uses less digits than its factorization.

1335021216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13906484 (or 13906476 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1335021216 is about 36537.9421423813. The cubic root of 1335021216 is about 1101.1066592705.

Adding to 1335021216 its reverse (6121205331), we get a palindrome (7456226547).

The spelling of 1335021216 in words is "one billion, three hundred thirty-five million, twenty-one thousand, two hundred sixteen".