999121033 has 4 divisors (see below), whose sum is σ = 999361408. Its totient is φ = 998880660.

The previous prime is 999120977. The next prime is 999121037. The reversal of 999121033 is 330121999.

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.

It is a cyclic number.

It is not a de Polignac number, because 999121033 - 2¹³ = 999112841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 999120983 and 999121001.

It is not an unprimeable number, because it can be changed into a prime (999121037) 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, 113841 + ... + 122302.

It is an arithmetic number, because the mean of its divisors is an integer number (249840352).

Almost surely, 2^999121033 is an apocalyptic number.

It is an amenable number.

999121033 is a deficient number, since it is larger than the sum of its proper divisors (240375).

999121033 is a wasteful number, since it uses less digits than its factorization.

999121033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240374.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 999121033 is about 31608.8758578979. The cubic root of 999121033 is about 999.7069251155.

The spelling of 999121033 in words is "nine hundred ninety-nine million, one hundred twenty-one thousand, thirty-three".