21121100010222 has 8 divisors (see below), whose sum is σ = 42242200020456. Its totient is φ = 7040366670072.

The previous prime is 21121100010193. The next prime is 21121100010259. The reversal of 21121100010222 is 22201000112112.

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

21121100010222 is an admirable number.

It is a super-2 number, since 2×21121100010222² (a number of 27 digits) contains 22 as substring.

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, 1760091667513 + ... + 1760091667524.

It is an arithmetic number, because the mean of its divisors is an integer number (5280275002557).

Almost surely, 2^{21121100010222} is an apocalyptic number.

21121100010222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21121100010222 is a wasteful number, since it uses less digits than its factorization.

21121100010222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520183335042.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21121100010222 its reverse (22201000112112), we get a palindrome (43322100122334).

The spelling of 21121100010222 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred million, ten thousand, two hundred twenty-two".