21121101101222 has 8 divisors (see below), whose sum is σ = 31682212886136. Its totient is φ = 10560363472512.

The previous prime is 21121101101203. The next prime is 21121101101251. The reversal of 21121101101222 is 22210110112112.

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

It is a super-2 number, since 2×21121101101222² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21121101101222.

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, 93397883 + ... + 93623750.

It is an arithmetic number, because the mean of its divisors is an integer number (3960276610767).

Almost surely, 2^{21121101101222} is an apocalyptic number.

21121101101222 is a deficient number, since it is larger than the sum of its proper divisors (10561111784914).

21121101101222 is a wasteful number, since it uses less digits than its factorization.

21121101101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187078102.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21121101101222 its reverse (22210110112112), we get a palindrome (43331211213334).

The spelling of 21121101101222 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred one million, one hundred one thousand, two hundred twenty-two".