21000032122310 has 32 divisors (see below), whose sum is σ = 37837194831072. Its totient is φ = 8391761201920.

The previous prime is 21000032122301. The next prime is 21000032122327. The reversal of 21000032122310 is 1322123000012.

It is a super-2 number, since 2×21000032122310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192583364 + ... + 192692376.

It is an arithmetic number, because the mean of its divisors is an integer number (1182412338471).

Almost surely, 2^{21000032122310} is an apocalyptic number.

21000032122310 is a deficient number, since it is larger than the sum of its proper divisors (16837162708762).

21000032122310 is a wasteful number, since it uses less digits than its factorization.

21000032122310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127768.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21000032122310 its reverse (1322123000012), we get a palindrome (22322155122322).

The spelling of 21000032122310 in words is "twenty-one trillion, thirty-two million, one hundred twenty-two thousand, three hundred ten".