21110200221002 has 8 divisors (see below), whose sum is σ = 32184403615812. Its totient is φ = 10382065682400.

The previous prime is 21110200221001. The next prime is 21110200221007. The reversal of 21110200221002 is 20012200201112.

It can be written as a sum of positive squares in 2 ways, for example, as 20848456452121 + 261743768881 = 4566011^2 + 511609^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21110200221001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86517213899 + ... + 86517214142.

Almost surely, 2^{21110200221002} is an apocalyptic number.

21110200221002 is a deficient number, since it is larger than the sum of its proper divisors (11074203394810).

21110200221002 is a wasteful number, since it uses less digits than its factorization.

21110200221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173034428104.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21110200221002 its reverse (20012200201112), we get a palindrome (41122400422114).

The spelling of 21110200221002 in words is "twenty-one trillion, one hundred ten billion, two hundred million, two hundred twenty-one thousand, two".