10111212219 has 4 divisors (see below), whose sum is σ = 13481616296. Its totient is φ = 6740808144.

The previous prime is 10111212211. The next prime is 10111212269. The reversal of 10111212219 is 91221211101.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 10111212219 - 2³ = 10111212211 is a prime.

It is a super-2 number, since 2×10111212219² (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 = 10111212195 and 10111212204.

It is not an unprimeable number, because it can be changed into a prime (10111212211) 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, 1685202034 + ... + 1685202039.

It is an arithmetic number, because the mean of its divisors is an integer number (3370404074).

Almost surely, 2^10111212219 is an apocalyptic number.

10111212219 is a deficient number, since it is larger than the sum of its proper divisors (3370404077).

10111212219 is an equidigital number, since it uses as much as digits as its factorization.

10111212219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370404076.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 10111212219 in words is "ten billion, one hundred eleven million, two hundred twelve thousand, two hundred nineteen".