121200020103 has 8 divisors (see below), whose sum is σ = 165967595248. Its totient is φ = 78616229184.

The previous prime is 121200020069. The next prime is 121200020141. The reversal of 121200020103 is 301020002121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121200020103 - 2²⁰ = 121198971527 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 (121200020153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545945926 + ... + 545946147.

It is an arithmetic number, because the mean of its divisors is an integer number (20745949406).

Almost surely, 2^121200020103 is an apocalyptic number.

121200020103 is a deficient number, since it is larger than the sum of its proper divisors (44767575145).

121200020103 is a wasteful number, since it uses less digits than its factorization.

121200020103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091892113.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 121200020103 its reverse (301020002121), we get a palindrome (422220022224).

The spelling of 121200020103 in words is "one hundred twenty-one billion, two hundred million, twenty thousand, one hundred three".