2100210121019 has 2 divisors, whose sum is σ = 2100210121020. Its totient is φ = 2100210121018.

The previous prime is 2100210120997. The next prime is 2100210121043. The reversal of 2100210121019 is 9101210120012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2100210121019 - 2¹² = 2100210116923 is a prime.

It is a super-2 number, since 2×2100210121019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2100210121049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050105060509 + 1050105060510.

It is an arithmetic number, because the mean of its divisors is an integer number (1050105060510).

Almost surely, 2^{2100210121019} is an apocalyptic number.

2100210121019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100210121019 is an equidigital number, since it uses as much as digits as its factorization.

2100210121019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 2100210121019 in words is "two trillion, one hundred billion, two hundred ten million, one hundred twenty-one thousand, nineteen".