212122130001121 has 4 divisors (see below), whose sum is σ = 212846096315412. Its totient is φ = 211398163686832.

The previous prime is 212122130001113. The next prime is 212122130001151. The reversal of 212122130001121 is 121100031221212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89955531591121 + 122166598410000 = 9484489^2 + 11052900^2 .

It is a cyclic number.

It is not a de Polignac number, because 212122130001121 - 2³ = 212122130001113 is a prime.

It is a super-2 number, since 2×212122130001121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212122130001151) 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, 361983156706 + ... + 361983157291.

It is an arithmetic number, because the mean of its divisors is an integer number (53211524078853).

Almost surely, 2^{212122130001121} is an apocalyptic number.

It is an amenable number.

212122130001121 is a deficient number, since it is larger than the sum of its proper divisors (723966314291).

212122130001121 is an equidigital number, since it uses as much as digits as its factorization.

212122130001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723966314290.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 212122130001121 its reverse (121100031221212), we get a palindrome (333222161222333).

The spelling of 212122130001121 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred thirty million, one thousand, one hundred twenty-one".