21002210199712 has 144 divisors (see below), whose sum is σ = 48826366202880. Its totient is φ = 8865816809472.

The previous prime is 21002210199709. The next prime is 21002210199713. The reversal of 21002210199712 is 21799101220012.

It is not an unprimeable number, because it can be changed into a prime (21002210199713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27300528 + ... + 28059280.

It is an arithmetic number, because the mean of its divisors is an integer number (339071987520).

Almost surely, 2^{21002210199712} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21002210199712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24413183101440).

21002210199712 is an abundant number, since it is smaller than the sum of its proper divisors (27824156003168).

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

21002210199712 is a wasteful number, since it uses less digits than its factorization.

21002210199712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759043 (or 759028 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 21002210199712 in words is "twenty-one trillion, two billion, two hundred ten million, one hundred ninety-nine thousand, seven hundred twelve".