222121021019 has 2 divisors, whose sum is σ = 222121021020. Its totient is φ = 222121021018.

The previous prime is 222121020991. The next prime is 222121021079. The reversal of 222121021019 is 910120121222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222121021019 - 2³² = 217826053723 is a prime.

It is a super-2 number, since 2×222121021019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222121020985 and 222121021003.

It is not a weakly prime, because it can be changed into another prime (222121021079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060510509 + 111060510510.

It is an arithmetic number, because the mean of its divisors is an integer number (111060510510).

Almost surely, 2^222121021019 is an apocalyptic number.

222121021019 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121021019 is an equidigital number, since it uses as much as digits as its factorization.

222121021019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 222121021019 in words is "two hundred twenty-two billion, one hundred twenty-one million, twenty-one thousand, nineteen".