2102145520019 has 2 divisors, whose sum is σ = 2102145520020. Its totient is φ = 2102145520018.

The previous prime is 2102145519973. The next prime is 2102145520067. The reversal of 2102145520019 is 9100255412012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102145520019 - 2¹² = 2102145515923 is a prime.

It is a super-2 number, since 2×2102145520019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2102145520099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051072760009 + 1051072760010.

It is an arithmetic number, because the mean of its divisors is an integer number (1051072760010).

Almost surely, 2^{2102145520019} is an apocalyptic number.

2102145520019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102145520019 is an equidigital number, since it uses as much as digits as its factorization.

2102145520019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 2102145520019 in words is "two trillion, one hundred two billion, one hundred forty-five million, five hundred twenty thousand, nineteen".