212020012221121 has 16 divisors (see below), whose sum is σ = 228406551408000. Its totient is φ = 195644523035520.

The previous prime is 212020012221067. The next prime is 212020012221151. The reversal of 212020012221121 is 121122210020212.

It is not a de Polignac number, because 212020012221121 - 2²³ = 212020003832513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212020012221151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 924110406 + ... + 924339808.

It is an arithmetic number, because the mean of its divisors is an integer number (14275409463000).

Almost surely, 2^{212020012221121} is an apocalyptic number.

It is an amenable number.

212020012221121 is a deficient number, since it is larger than the sum of its proper divisors (16386539186879).

212020012221121 is a wasteful number, since it uses less digits than its factorization.

212020012221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253176.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212020012221121 its reverse (121122210020212), we get a palindrome (333142222241333).

The spelling of 212020012221121 in words is "two hundred twelve trillion, twenty billion, twelve million, two hundred twenty-one thousand, one hundred twenty-one".