21121122119 has 8 divisors (see below), whose sum is σ = 21792888768. Its totient is φ = 20458621440.

The previous prime is 21121122107. The next prime is 21121122137. The reversal of 21121122119 is 91122112112.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21121122119 is a prime.

It is a super-2 number, since 2×21121122119² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21121122094 and 21121122103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121122149) 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, 2311862 + ... + 2320979.

It is an arithmetic number, because the mean of its divisors is an integer number (2724111096).

Almost surely, 2^21121122119 is an apocalyptic number.

21121122119 is a deficient number, since it is larger than the sum of its proper divisors (671766649).

21121122119 is an equidigital number, since it uses as much as digits as its factorization.

21121122119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632985.

The product of its digits is 144, while the sum is 23.

The spelling of 21121122119 in words is "twenty-one billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred nineteen".