200010202122121 has 4 divisors (see below), whose sum is σ = 200010249048832. Its totient is φ = 200010155195412.

The previous prime is 200010202121993. The next prime is 200010202122127. The reversal of 200010202122121 is 121221202010002.

It is a happy number.

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 200010202122121 - 2⁷ = 200010202121993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200010202122095 and 200010202122104.

It is not an unprimeable number, because it can be changed into a prime (200010202122127) 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, 16351545 + ... + 25833958.

It is an arithmetic number, because the mean of its divisors is an integer number (50002562262208).

Almost surely, 2^{200010202122121} is an apocalyptic number.

It is an amenable number.

200010202122121 is a deficient number, since it is larger than the sum of its proper divisors (46926711).

200010202122121 is an equidigital number, since it uses as much as digits as its factorization.

200010202122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46926710.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200010202122121 its reverse (121221202010002), we get a palindrome (321231404132123).

The spelling of 200010202122121 in words is "two hundred trillion, ten billion, two hundred two million, one hundred twenty-two thousand, one hundred twenty-one".