121200020101 has 4 divisors (see below), whose sum is σ = 121201489152. Its totient is φ = 121198551052.

The previous prime is 121200020069. The next prime is 121200020141. The reversal of 121200020101 is 101020002121.

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: 101020002121 = 29 ⋅3483448349.

It is a cyclic number.

It is not a de Polignac number, because 121200020101 - 2⁵ = 121200020069 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 (121200020141) 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, 602911 + ... + 778396.

It is an arithmetic number, because the mean of its divisors is an integer number (30300372288).

Almost surely, 2^121200020101 is an apocalyptic number.

It is an amenable number.

121200020101 is a deficient number, since it is larger than the sum of its proper divisors (1469051).

121200020101 is an equidigital number, since it uses as much as digits as its factorization.

121200020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469050.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121200020101 its reverse (101020002121), we get a palindrome (222220022222).

The spelling of 121200020101 in words is "one hundred twenty-one billion, two hundred million, twenty thousand, one hundred one".