2111221210019 has 2 divisors, whose sum is σ = 2111221210020. Its totient is φ = 2111221210018.

The previous prime is 2111221210013. The next prime is 2111221210027. The reversal of 2111221210019 is 9100121221112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111221210019 is a prime.

It is a super-2 number, since 2×2111221210019² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2111221209976 and 2111221210003.

It is not a weakly prime, because it can be changed into another prime (2111221210013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055610605009 + 1055610605010.

It is an arithmetic number, because the mean of its divisors is an integer number (1055610605010).

Almost surely, 2^{2111221210019} is an apocalyptic number.

2111221210019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111221210019 is an equidigital number, since it uses as much as digits as its factorization.

2111221210019 is an evil number, because the sum of its binary digits is even.

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

The spelling of 2111221210019 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, two hundred ten thousand, nineteen".