212021010012021 has 32 divisors (see below), whose sum is σ = 323199011865600. Its totient is φ = 121110099358080.

The previous prime is 212021010011963. The next prime is 212021010012023. The reversal of 212021010012021 is 120210010120212.

It is not a de Polignac number, because 212021010012021 - 2⁹ = 212021010011509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021010012023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2448830110 + ... + 2448916688.

It is an arithmetic number, because the mean of its divisors is an integer number (10099969120800).

Almost surely, 2^{212021010012021} is an apocalyptic number.

212021010012021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212021010012021 is a deficient number, since it is larger than the sum of its proper divisors (111178001853579).

212021010012021 is a wasteful number, since it uses less digits than its factorization.

212021010012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128329.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212021010012021 its reverse (120210010120212), we get a palindrome (332231020132233).

The spelling of 212021010012021 in words is "two hundred twelve trillion, twenty-one billion, ten million, twelve thousand, twenty-one".