21121110119 has 8 divisors (see below), whose sum is σ = 21283046688. Its totient is φ = 20959286400.

The previous prime is 21121110041. The next prime is 21121110161. The reversal of 21121110119 is 91101112112.

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

It is a cyclic number.

It is not a de Polignac number, because 21121110119 - 2¹² = 21121106023 is a prime.

It is a super-2 number, since 2×21121110119² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21121110119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121110319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368819 + ... + 422219.

It is an arithmetic number, because the mean of its divisors is an integer number (2660380836).

Almost surely, 2^21121110119 is an apocalyptic number.

21121110119 is a deficient number, since it is larger than the sum of its proper divisors (161936569).

21121110119 is a wasteful number, since it uses less digits than its factorization.

21121110119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56425.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 21121110119 in words is "twenty-one billion, one hundred twenty-one million, one hundred ten thousand, one hundred nineteen".