212202002121 has 8 divisors (see below), whose sum is σ = 299579297184. Its totient is φ = 133146354240.

The previous prime is 212202002119. The next prime is 212202002137. The reversal of 212202002121 is 121200202212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212202002121 - 2¹ = 212202002119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212202002121.

It is not an unprimeable number, because it can be changed into a prime (212202002191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2080411735 + ... + 2080411836.

It is an arithmetic number, because the mean of its divisors is an integer number (37447412148).

Almost surely, 2^212202002121 is an apocalyptic number.

It is an amenable number.

212202002121 is a deficient number, since it is larger than the sum of its proper divisors (87377295063).

212202002121 is a wasteful number, since it uses less digits than its factorization.

212202002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160823591.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212202002121 its reverse (121200202212), we get a palindrome (333402204333).

The spelling of 212202002121 in words is "two hundred twelve billion, two hundred two million, two thousand, one hundred twenty-one".