21121120022 has 8 divisors (see below), whose sum is σ = 31729757400. Its totient is φ = 10544534224.

The previous prime is 21121119961. The next prime is 21121120037. The reversal of 21121120022 is 22002112112.

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

It is a super-3 number, since 3×21121120022³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21121119979 and 21121120006.

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, 8011247 + ... + 8013882.

It is an arithmetic number, because the mean of its divisors is an integer number (3966219675).

Almost surely, 2^21121120022 is an apocalyptic number.

21121120022 is a deficient number, since it is larger than the sum of its proper divisors (10608637378).

21121120022 is a wasteful number, since it uses less digits than its factorization.

21121120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16025790.

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

Adding to 21121120022 its reverse (22002112112), we get a palindrome (43123232134).

The spelling of 21121120022 in words is "twenty-one billion, one hundred twenty-one million, one hundred twenty thousand, twenty-two".