2021421013019 has 2 divisors, whose sum is σ = 2021421013020. Its totient is φ = 2021421013018.

The previous prime is 2021421012983. The next prime is 2021421013063. The reversal of 2021421013019 is 9103101241202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021421013019 - 2⁸ = 2021421012763 is a prime.

It is a super-2 number, since 2×2021421013019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2021421013319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010710506509 + 1010710506510.

It is an arithmetic number, because the mean of its divisors is an integer number (1010710506510).

Almost surely, 2^{2021421013019} is an apocalyptic number.

2021421013019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021421013019 is an equidigital number, since it uses as much as digits as its factorization.

2021421013019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 2021421013019 in words is "two trillion, twenty-one billion, four hundred twenty-one million, thirteen thousand, nineteen".