212100012021019 has 4 divisors (see below), whose sum is σ = 212100979774744. Its totient is φ = 212099044267296.

The previous prime is 212100012020993. The next prime is 212100012021031. The reversal of 212100012021019 is 910120210001212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212100012021019 - 2¹⁵ = 212100011988251 is a prime.

It is a super-2 number, since 2×212100012021019² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100012021059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483548037 + ... + 483986470.

It is an arithmetic number, because the mean of its divisors is an integer number (53025244943686).

Almost surely, 2^{212100012021019} is an apocalyptic number.

212100012021019 is a deficient number, since it is larger than the sum of its proper divisors (967753725).

212100012021019 is an equidigital number, since it uses as much as digits as its factorization.

212100012021019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967753724.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 212100012021019 in words is "two hundred twelve trillion, one hundred billion, twelve million, twenty-one thousand, nineteen".