212201021130021 has 96 divisors (see below), whose sum is σ = 386329912550400. Its totient is φ = 109028713098240.

The previous prime is 212201021129941. The next prime is 212201021130029. The reversal of 212201021130021 is 120031120102212.

212201021130021 is a `hidden beast` number, since 2 + 122 + 0 + 10 + 211 + 300 + 21 = 666.

It is not a de Polignac number, because 212201021130021 - 2⁷ = 212201021129893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212201021129976 and 212201021130003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201021130029) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 105142350 + ... + 107141568.

It is an arithmetic number, because the mean of its divisors is an integer number (4024269922400).

Almost surely, 2^{212201021130021} is an apocalyptic number.

212201021130021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212201021130021 is a deficient number, since it is larger than the sum of its proper divisors (174128891420379).

212201021130021 is a wasteful number, since it uses less digits than its factorization.

212201021130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000919 (or 2000916 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 212201021130021 its reverse (120031120102212), we get a palindrome (332232141232233).

The spelling of 212201021130021 in words is "two hundred twelve trillion, two hundred one billion, twenty-one million, one hundred thirty thousand, twenty-one".