212001120121021 has 48 divisors (see below), whose sum is σ = 275595134209920. Its totient is φ = 159443472988800.

The previous prime is 212001120120989. The next prime is 212001120121051. The reversal of 212001120121021 is 120121021100212.

212001120121021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212001120121021 - 2⁵ = 212001120120989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212001120120986 and 212001120121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212001120121051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68766370 + ... + 71783116.

It is an arithmetic number, because the mean of its divisors is an integer number (5741565296040).

Almost surely, 2^{212001120121021} is an apocalyptic number.

It is an amenable number.

212001120121021 is a deficient number, since it is larger than the sum of its proper divisors (63594014088899).

212001120121021 is a wasteful number, since it uses less digits than its factorization.

212001120121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3019666 (or 3019655 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212001120121021 its reverse (120121021100212), we get a palindrome (332122141221233).

The spelling of 212001120121021 in words is "two hundred twelve trillion, one billion, one hundred twenty million, one hundred twenty-one thousand, twenty-one".