200121100220122 has 32 divisors (see below), whose sum is σ = 306788532540048. Its totient is φ = 97870038030336.

The previous prime is 200121100220117. The next prime is 200121100220143. The reversal of 200121100220122 is 221022001121002.

It is a happy number.

200121100220122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 123375423287601 + 76745676932521 = 11107449^2 + 8760461^2 .

It is a super-2 number, since 2×200121100220122² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200121100220096 and 200121100220105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149492068 + ... + 150824800.

Almost surely, 2^{200121100220122} is an apocalyptic number.

200121100220122 is a deficient number, since it is larger than the sum of its proper divisors (106667432319926).

200121100220122 is a wasteful number, since it uses less digits than its factorization.

200121100220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337154.

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

Adding to 200121100220122 its reverse (221022001121002), we get a palindrome (421143101341124).

The spelling of 200121100220122 in words is "two hundred trillion, one hundred twenty-one billion, one hundred million, two hundred twenty thousand, one hundred twenty-two".