212201200121 has 4 divisors (see below), whose sum is σ = 213727827600. Its totient is φ = 210674572644.

The previous prime is 212201200117. The next prime is 212201200153. The reversal of 212201200121 is 121002102212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212201200121 - 2² = 212201200117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212201200096 and 212201200105.

It is not an unprimeable number, because it can be changed into a prime (212201200021) 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, 763313531 + ... + 763313808.

It is an arithmetic number, because the mean of its divisors is an integer number (53431956900).

Almost surely, 2^212201200121 is an apocalyptic number.

It is an amenable number.

212201200121 is a deficient number, since it is larger than the sum of its proper divisors (1526627479).

212201200121 is a wasteful number, since it uses less digits than its factorization.

212201200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526627478.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212201200121 its reverse (121002102212), we get a palindrome (333203302333).

The spelling of 212201200121 in words is "two hundred twelve billion, two hundred one million, two hundred thousand, one hundred twenty-one".