20110212100919 has 2 divisors, whose sum is σ = 20110212100920. Its totient is φ = 20110212100918.

The previous prime is 20110212100889. The next prime is 20110212100921. The reversal of 20110212100919 is 91900121201102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110212100919 is a prime.

It is a super-2 number, since 2×20110212100919² (a number of 27 digits) contains 22 as substring.

Together with 20110212100921, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20110212100891 and 20110212100900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110212100999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055106050459 + 10055106050460.

It is an arithmetic number, because the mean of its divisors is an integer number (10055106050460).

Almost surely, 2^{20110212100919} is an apocalyptic number.

20110212100919 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110212100919 is an equidigital number, since it uses as much as digits as its factorization.

20110212100919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 20110212100919 in words is "twenty trillion, one hundred ten billion, two hundred twelve million, one hundred thousand, nine hundred nineteen".