1020121000219 has 2 divisors, whose sum is σ = 1020121000220. Its totient is φ = 1020121000218.

The previous prime is 1020121000211. The next prime is 1020121000229. The reversal of 1020121000219 is 9120001210201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020121000219 - 2³ = 1020121000211 is a prime.

It is a super-2 number, since 2×1020121000219² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020121000196 and 1020121000205.

It is not a weakly prime, because it can be changed into another prime (1020121000211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510060500109 + 510060500110.

It is an arithmetic number, because the mean of its divisors is an integer number (510060500110).

Almost surely, 2^{1020121000219} is an apocalyptic number.

1020121000219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020121000219 is an equidigital number, since it uses as much as digits as its factorization.

1020121000219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 1020121000219 in words is "one trillion, twenty billion, one hundred twenty-one million, two hundred nineteen", and thus it is an aban number.