200101020122121 has 4 divisors (see below), whose sum is σ = 266801360162832. Its totient is φ = 133400680081412.

The previous prime is 200101020122077. The next prime is 200101020122173. The reversal of 200101020122121 is 121221020101002.

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 200101020122121 - 2¹¹ = 200101020120073 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 200101020122121.

It is not an unprimeable number, because it can be changed into a prime (200101020122021) 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, 33350170020351 + ... + 33350170020356.

It is an arithmetic number, because the mean of its divisors is an integer number (66700340040708).

Almost surely, 2^{200101020122121} is an apocalyptic number.

It is an amenable number.

200101020122121 is a deficient number, since it is larger than the sum of its proper divisors (66700340040711).

200101020122121 is an equidigital number, since it uses as much as digits as its factorization.

200101020122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66700340040710.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 200101020122121 its reverse (121221020101002), we get a palindrome (321322040223123).

The spelling of 200101020122121 in words is "two hundred trillion, one hundred one billion, twenty million, one hundred twenty-two thousand, one hundred twenty-one".