2112121003 has 8 divisors (see below), whose sum is σ = 2138488128. Its totient is φ = 2085775944.

The previous prime is 2112120979. The next prime is 2112121007. The reversal of 2112121003 is 3001212112.

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 2112121003 - 2¹³ = 2112112811 is a prime.

It is a super-2 number, since 2×2112121003² = 8922110262627452018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112121007) 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, 274000 + ... + 281602.

It is an arithmetic number, because the mean of its divisors is an integer number (267311016).

Almost surely, 2^2112121003 is an apocalyptic number.

2112121003 is a deficient number, since it is larger than the sum of its proper divisors (26367125).

2112121003 is an equidigital number, since it uses as much as digits as its factorization.

2112121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11033.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2112121003 is about 45957.8176483610. The cubic root of 2112121003 is about 1283.0382341362.

Adding to 2112121003 its reverse (3001212112), we get a palindrome (5113333115).

It can be divided in two parts, 21121 and 21003, that added together give a palindrome (42124).

The spelling of 2112121003 in words is "two billion, one hundred twelve million, one hundred twenty-one thousand, three".