121000200101 has 4 divisors (see below), whose sum is σ = 132000218304. Its totient is φ = 110000181900.

The previous prime is 121000200073. The next prime is 121000200107. The reversal of 121000200101 is 101002000121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 101002000121 = 11 ⋅9182000011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121000200101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000200107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5500009085 + ... + 5500009106.

It is an arithmetic number, because the mean of its divisors is an integer number (33000054576).

Almost surely, 2^121000200101 is an apocalyptic number.

121000200101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121000200101 is a deficient number, since it is larger than the sum of its proper divisors (11000018203).

121000200101 is a wasteful number, since it uses less digits than its factorization.

121000200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000018202.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 121000200101 its reverse (101002000121), we get a palindrome (222002200222).

The spelling of 121000200101 in words is "one hundred twenty-one billion, two hundred thousand, one hundred one".