21312150334 has 16 divisors (see below), whose sum is σ = 34075890000. Its totient is φ = 9961934464.

The previous prime is 21312150311. The next prime is 21312150341. The reversal of 21312150334 is 43305121312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21312150299 and 21312150308.

It is a congruent number.

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, 2098384 + ... + 2108515.

It is an arithmetic number, because the mean of its divisors is an integer number (2129743125).

Almost surely, 2^21312150334 is an apocalyptic number.

21312150334 is a deficient number, since it is larger than the sum of its proper divisors (12763739666).

21312150334 is a wasteful number, since it uses less digits than its factorization.

21312150334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4207067.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 21312150334 its reverse (43305121312), we get a palindrome (64617271646).

The spelling of 21312150334 in words is "twenty-one billion, three hundred twelve million, one hundred fifty thousand, three hundred thirty-four".