21100001120222 has 4 divisors (see below), whose sum is σ = 31650001680336. Its totient is φ = 10550000560110.

The previous prime is 21100001120221. The next prime is 21100001120243. The reversal of 21100001120222 is 22202110000112.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21100001120197 and 21100001120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100001120221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5275000280054 + ... + 5275000280057.

It is an arithmetic number, because the mean of its divisors is an integer number (7912500420084).

Almost surely, 2^{21100001120222} is an apocalyptic number.

21100001120222 is a deficient number, since it is larger than the sum of its proper divisors (10550000560114).

21100001120222 is a wasteful number, since it uses less digits than its factorization.

21100001120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10550000560113.

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

Adding to 21100001120222 its reverse (22202110000112), we get a palindrome (43302111120334).

The spelling of 21100001120222 in words is "twenty-one trillion, one hundred billion, one million, one hundred twenty thousand, two hundred twenty-two".