212021123201 has 16 divisors (see below), whose sum is σ = 221803266048. Its totient is φ = 202440772800.

The previous prime is 212021123183. The next prime is 212021123219. The reversal of 212021123201 is 102321120212.

It is an interprime number because it is at equal distance from previous prime (212021123183) and next prime (212021123219).

It is a cyclic number.

It is not a de Polignac number, because 212021123201 - 2¹⁰ = 212021122177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212021123201.

It is not an unprimeable number, because it can be changed into a prime (212021123231) 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, 563831 + ... + 861363.

It is an arithmetic number, because the mean of its divisors is an integer number (13862704128).

Almost surely, 2^212021123201 is an apocalyptic number.

It is an amenable number.

212021123201 is a deficient number, since it is larger than the sum of its proper divisors (9782142847).

212021123201 is a wasteful number, since it uses less digits than its factorization.

212021123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297872.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212021123201 its reverse (102321120212), we get a palindrome (314342243413).

It can be divided in two parts, 2120211 and 23201, that added together give a palindrome (2143412).

The spelling of 212021123201 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-three thousand, two hundred one".