2221220121019 has 2 divisors, whose sum is σ = 2221220121020. Its totient is φ = 2221220121018.

The previous prime is 2221220121011. The next prime is 2221220121037. The reversal of 2221220121019 is 9101210221222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221220121019 - 2³ = 2221220121011 is a prime.

It is a super-2 number, since 2×2221220121019² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221220120984 and 2221220121002.

It is not a weakly prime, because it can be changed into another prime (2221220121011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110610060509 + 1110610060510.

It is an arithmetic number, because the mean of its divisors is an integer number (1110610060510).

Almost surely, 2^{2221220121019} is an apocalyptic number.

2221220121019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221220121019 is an equidigital number, since it uses as much as digits as its factorization.

2221220121019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 2221220121019 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, nineteen".