212012221021019 has 4 divisors (see below), whose sum is σ = 212160793006344. Its totient is φ = 211863649035696.

The previous prime is 212012221021009. The next prime is 212012221021039. The reversal of 212012221021019 is 910120122210212.

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 212012221021019 - 2³⁶ = 211943501544283 is a prime.

It is a super-2 number, since 2×212012221021019² (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 (212012221021009) 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, 74285990522 + ... + 74285993375.

It is an arithmetic number, because the mean of its divisors is an integer number (53040198251586).

Almost surely, 2^{212012221021019} is an apocalyptic number.

212012221021019 is a deficient number, since it is larger than the sum of its proper divisors (148571985325).

212012221021019 is a wasteful number, since it uses less digits than its factorization.

212012221021019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148571985324.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 212012221021019 in words is "two hundred twelve trillion, twelve billion, two hundred twenty-one million, twenty-one thousand, nineteen".