21310020100002 has 32 divisors (see below), whose sum is σ = 43066463961024. Its totient is φ = 7028960025600.

The previous prime is 21310020099847. The next prime is 21310020100007. The reversal of 21310020100002 is 20000102001312.

It is not an unprimeable number, because it can be changed into a prime (21310020100007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571477 + ... + 6553367.

It is an arithmetic number, because the mean of its divisors is an integer number (1345826998782).

Almost surely, 2^{21310020100002} is an apocalyptic number.

21310020100002 is an abundant number, since it is smaller than the sum of its proper divisors (21756443861022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21310020100002 is a wasteful number, since it uses less digits than its factorization.

21310020100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5988114.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21310020100002 its reverse (20000102001312), we get a palindrome (41310122101314).

The spelling of 21310020100002 in words is "twenty-one trillion, three hundred ten billion, twenty million, one hundred thousand, two".