121129003 has 4 divisors (see below), whose sum is σ = 121153648. Its totient is φ = 121104360.

The previous prime is 121128991. The next prime is 121129007. The reversal of 121129003 is 300921121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121129003 - 2¹⁷ = 120997931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121129007) 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, 2151 + ... + 15712.

It is an arithmetic number, because the mean of its divisors is an integer number (30288412).

Almost surely, 2^121129003 is an apocalyptic number.

121129003 is a deficient number, since it is larger than the sum of its proper divisors (24645).

121129003 is an equidigital number, since it uses as much as digits as its factorization.

121129003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24644.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 121129003 is about 11005.8622106585. The cubic root of 121129003 is about 494.7844560325.

It can be divided in two parts, 12112 and 9003, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 121129003 in words is "one hundred twenty-one million, one hundred twenty-nine thousand, three".