212230020121 has 16 divisors (see below), whose sum is σ = 260746536960. Its totient is φ = 168670406160.

The previous prime is 212230020113. The next prime is 212230020181. The reversal of 212230020121 is 121020032212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212230020121 - 2³ = 212230020113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212230020095 and 212230020104.

It is not an unprimeable number, because it can be changed into a prime (212230020181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16969435 + ... + 16981936.

It is an arithmetic number, because the mean of its divisors is an integer number (16296658560).

Almost surely, 2^212230020121 is an apocalyptic number.

It is an amenable number.

212230020121 is a deficient number, since it is larger than the sum of its proper divisors (48516516839).

212230020121 is a wasteful number, since it uses less digits than its factorization.

212230020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33951444.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212230020121 its reverse (121020032212), we get a palindrome (333250052333).

The spelling of 212230020121 in words is "two hundred twelve billion, two hundred thirty million, twenty thousand, one hundred twenty-one".