21216200653510 has 16 divisors (see below), whose sum is σ = 38209616036496. Its totient is φ = 8481934736928.

The previous prime is 21216200653421. The next prime is 21216200653553. The reversal of 21216200653510 is 1535600261212.

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, 568170957 + ... + 568208296.

It is an arithmetic number, because the mean of its divisors is an integer number (2388101002281).

Almost surely, 2^{21216200653510} is an apocalyptic number.

21216200653510 is a deficient number, since it is larger than the sum of its proper divisors (16993415382986).

21216200653510 is a wasteful number, since it uses less digits than its factorization.

21216200653510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136381127.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 21216200653510 in words is "twenty-one trillion, two hundred sixteen billion, two hundred million, six hundred fifty-three thousand, five hundred ten".