10212121110019 has 4 divisors (see below), whose sum is σ = 10656126375696. Its totient is φ = 9768115844344.

The previous prime is 10212121109977. The next prime is 10212121110043. The reversal of 10212121110019 is 91001112121201.

It is a happy number.

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 10212121110019 - 2¹¹ = 10212121107971 is a prime.

It is a super-2 number, since 2×10212121110019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10212121110049) 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, 222002632804 + ... + 222002632849.

It is an arithmetic number, because the mean of its divisors is an integer number (2664031593924).

Almost surely, 2^{10212121110019} is an apocalyptic number.

10212121110019 is a deficient number, since it is larger than the sum of its proper divisors (444005265677).

10212121110019 is an equidigital number, since it uses as much as digits as its factorization.

10212121110019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444005265676.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 10212121110019 in words is "ten trillion, two hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, nineteen".