21000011011222 has 8 divisors (see below), whose sum is σ = 33352958664936. Its totient is φ = 9882358122912.

The previous prime is 21000011011163. The next prime is 21000011011237. The reversal of 21000011011222 is 22211011000012.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308823691308 + ... + 308823691375.

It is an arithmetic number, because the mean of its divisors is an integer number (4169119833117).

Almost surely, 2^{21000011011222} is an apocalyptic number.

21000011011222 is a deficient number, since it is larger than the sum of its proper divisors (12352947653714).

21000011011222 is a wasteful number, since it uses less digits than its factorization.

21000011011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617647382702.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21000011011222 its reverse (22211011000012), we get a palindrome (43211022011234).

The spelling of 21000011011222 in words is "twenty-one trillion, eleven million, eleven thousand, two hundred twenty-two".