21002134150552 has 32 divisors (see below), whose sum is σ = 41484768750000. Its totient is φ = 9940414169088.

The previous prime is 21002134150549. The next prime is 21002134150597. The reversal of 21002134150552 is 25505143120012.

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, 55123177 + ... + 55502872.

Almost surely, 2^{21002134150552} is an apocalyptic number.

It is an amenable number.

21002134150552 is a deficient number, since it is larger than the sum of its proper divisors (20482634599448).

21002134150552 is a wasteful number, since it uses less digits than its factorization.

21002134150552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110627323 (or 110627319 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 21002134150552 its reverse (25505143120012), we get a palindrome (46507277270564).

The spelling of 21002134150552 in words is "twenty-one trillion, two billion, one hundred thirty-four million, one hundred fifty thousand, five hundred fifty-two".