212122111220201 has 64 divisors (see below), whose sum is σ = 272649926148096. Its totient is φ = 160572182284800.

The previous prime is 212122111220191. The next prime is 212122111220219. The reversal of 212122111220201 is 102022111221212.

It is not a de Polignac number, because 212122111220201 - 2¹⁴ = 212122111203817 is a prime.

It is a super-2 number, since 2×212122111220201² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212122111220101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53842256 + ... + 57647486.

It is an arithmetic number, because the mean of its divisors is an integer number (4260155096064).

Almost surely, 2^{212122111220201} is an apocalyptic number.

It is an amenable number.

212122111220201 is a deficient number, since it is larger than the sum of its proper divisors (60527814927895).

212122111220201 is a wasteful number, since it uses less digits than its factorization.

212122111220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3805582.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212122111220201 its reverse (102022111221212), we get a palindrome (314144222441413).

The spelling of 212122111220201 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty thousand, two hundred one".