21000112200210 has 128 divisors (see below), whose sum is σ = 59217236434944. Its totient is φ = 4698870946560.

The previous prime is 21000112200191. The next prime is 21000112200229. The reversal of 21000112200210 is 1200221100012.

It is an interprime number because it is at equal distance from previous prime (21000112200191) and next prime (21000112200229).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45100807 + ... + 45564053.

It is an arithmetic number, because the mean of its divisors is an integer number (462634659648).

Almost surely, 2^{21000112200210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21000112200210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29608618217472).

21000112200210 is an abundant number, since it is smaller than the sum of its proper divisors (38217124234734).

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

21000112200210 is a wasteful number, since it uses less digits than its factorization.

21000112200210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473848.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21000112200210 its reverse (1200221100012), we get a palindrome (22200333300222).

The spelling of 21000112200210 in words is "twenty-one trillion, one hundred twelve million, two hundred thousand, two hundred ten".