21233535070 has 48 divisors (see below), whose sum is σ = 42096131568. Its totient is φ = 7647100160.

The previous prime is 21233535023. The next prime is 21233535073. The reversal of 21233535070 is 7053533212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233535073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16245357 + ... + 16246663.

It is an arithmetic number, because the mean of its divisors is an integer number (877002741).

Almost surely, 2^21233535070 is an apocalyptic number.

21233535070 is a deficient number, since it is larger than the sum of its proper divisors (20862596498).

21233535070 is a wasteful number, since it uses less digits than its factorization.

21233535070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 31.

The spelling of 21233535070 in words is "twenty-one billion, two hundred thirty-three million, five hundred thirty-five thousand, seventy".