121131020203 has 8 divisors (see below), whose sum is σ = 124803044928. Its totient is φ = 117504610944.

The previous prime is 121131020177. The next prime is 121131020233. The reversal of 121131020203 is 302020131121.

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

It is a cyclic number.

It is not a de Polignac number, because 121131020203 - 2²⁵ = 121097465771 is a prime.

It is a super-2 number, since 2×121131020203² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121131020233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11398476 + ... + 11409097.

It is an arithmetic number, because the mean of its divisors is an integer number (15600380616).

Almost surely, 2^121131020203 is an apocalyptic number.

121131020203 is a deficient number, since it is larger than the sum of its proper divisors (3672024725).

121131020203 is a wasteful number, since it uses less digits than its factorization.

121131020203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22807733.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121131020203 its reverse (302020131121), we get a palindrome (423151151324).

The spelling of 121131020203 in words is "one hundred twenty-one billion, one hundred thirty-one million, twenty thousand, two hundred three".