2000200122121 has 12 divisors (see below), whose sum is σ = 2125002155068. Its totient is φ = 1882344517632.

The previous prime is 2000200122119. The next prime is 2000200122127. The reversal of 2000200122121 is 1212210020002.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 127298390521 + 1872901731600 = 356789^2 + 1368540^2 .

It is not a de Polignac number, because 2000200122121 - 2¹ = 2000200122119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000200122127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2445565 + ... + 3159301.

Almost surely, 2^{2000200122121} is an apocalyptic number.

It is an amenable number.

2000200122121 is a deficient number, since it is larger than the sum of its proper divisors (124802032947).

2000200122121 is an equidigital number, since it uses as much as digits as its factorization.

2000200122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723468 (or 723451 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2000200122121 its reverse (1212210020002), we get a palindrome (3212410142123).

The spelling of 2000200122121 in words is "two trillion, two hundred million, one hundred twenty-two thousand, one hundred twenty-one".