21011101222202 has 32 divisors (see below), whose sum is σ = 38790304261632. Its totient is φ = 8311959944064.

The previous prime is 21011101222187. The next prime is 21011101222213. The reversal of 21011101222202 is 20222210111012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11883023 + ... + 13536189.

It is an arithmetic number, because the mean of its divisors is an integer number (1212197008176).

Almost surely, 2^{21011101222202} is an apocalyptic number.

21011101222202 is a deficient number, since it is larger than the sum of its proper divisors (17779203039430).

21011101222202 is a wasteful number, since it uses less digits than its factorization.

21011101222202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723022.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21011101222202 its reverse (20222210111012), we get a palindrome (41233311333214).

The spelling of 21011101222202 in words is "twenty-one trillion, eleven billion, one hundred one million, two hundred twenty-two thousand, two hundred two".