21111100002201 has 16 divisors (see below), whose sum is σ = 31011084796608. Its totient is φ = 12667926792000.

The previous prime is 21111100002193. The next prime is 21111100002217. The reversal of 21111100002201 is 10220000111112.

It is not a de Polignac number, because 21111100002201 - 2³ = 21111100002193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21111100002241) 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, 3166978366 + ... + 3166985031.

It is an arithmetic number, because the mean of its divisors is an integer number (1938192799788).

Almost surely, 2^{21111100002201} is an apocalyptic number.

It is an amenable number.

21111100002201 is a deficient number, since it is larger than the sum of its proper divisors (9899984794407).

21111100002201 is a wasteful number, since it uses less digits than its factorization.

21111100002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6333963512.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21111100002201 its reverse (10220000111112), we get a palindrome (31331100113313).

The spelling of 21111100002201 in words is "twenty-one trillion, one hundred eleven billion, one hundred million, two thousand, two hundred one".