119111030021 has 4 divisors (see below), whose sum is σ = 122953321344. Its totient is φ = 115268738700.

The previous prime is 119111029997. The next prime is 119111030047. The reversal of 119111030021 is 120030111911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120030111911 = 389 ⋅308560699.

It is a cyclic number.

It is not a de Polignac number, because 119111030021 - 2⁶ = 119111029957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 119111029975 and 119111030002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (119111030081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1921145615 + ... + 1921145676.

It is an arithmetic number, because the mean of its divisors is an integer number (30738330336).

Almost surely, 2^119111030021 is an apocalyptic number.

It is an amenable number.

119111030021 is a deficient number, since it is larger than the sum of its proper divisors (3842291323).

119111030021 is an equidigital number, since it uses as much as digits as its factorization.

119111030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842291322.

The product of its (nonzero) digits is 54, while the sum is 20.

Adding to 119111030021 its reverse (120030111911), we get a palindrome (239141141932).

The spelling of 119111030021 in words is "one hundred nineteen billion, one hundred eleven million, thirty thousand, twenty-one".