212342020441021 has 8 divisors (see below), whose sum is σ = 218119654169144. Its totient is φ = 206566421460480.

The previous prime is 212342020440961. The next prime is 212342020441069. The reversal of 212342020441021 is 120144020243212.

It can be written as a sum of positive squares in 4 ways, for example, as 196859448096921 + 15482572344100 = 14030661^2 + 3934790^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212342020441021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212342020441721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508475340 + ... + 508892773.

It is an arithmetic number, because the mean of its divisors is an integer number (27264956771143).

Almost surely, 2^{212342020441021} is an apocalyptic number.

It is an amenable number.

212342020441021 is a deficient number, since it is larger than the sum of its proper divisors (5777633728123).

212342020441021 is a wasteful number, since it uses less digits than its factorization.

212342020441021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017373791.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 212342020441021 its reverse (120144020243212), we get a palindrome (332486040684233).

The spelling of 212342020441021 in words is "two hundred twelve trillion, three hundred forty-two billion, twenty million, four hundred forty-one thousand, twenty-one".