21210020032310 has 16 divisors (see below), whose sum is σ = 38182041058896. Its totient is φ = 8483118012768.

The previous prime is 21210020032171. The next prime is 21210020032351. The reversal of 21210020032310 is 1323002001212.

It is a super-2 number, since 2×21210020032310² (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 7 ways as a sum of consecutive naturals, for example, 111149924 + ... + 111340583.

It is an arithmetic number, because the mean of its divisors is an integer number (2386377566181).

Almost surely, 2^{21210020032310} is an apocalyptic number.

21210020032310 is a deficient number, since it is larger than the sum of its proper divisors (16972021026586).

21210020032310 is a wasteful number, since it uses less digits than its factorization.

21210020032310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222500047.

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

Adding to 21210020032310 its reverse (1323002001212), we get a palindrome (22533022033522).

The spelling of 21210020032310 in words is "twenty-one trillion, two hundred ten billion, twenty million, thirty-two thousand, three hundred ten".