1000121245 has 8 divisors (see below), whose sum is σ = 1211798016. Its totient is φ = 792328656.

The previous prime is 1000121197. The next prime is 1000121257. The reversal of 1000121245 is 5421210001.

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 1000121245 - 2⁷ = 1000121117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970477 + ... + 971506.

It is an arithmetic number, because the mean of its divisors is an integer number (151474752).

Almost surely, 2^1000121245 is an apocalyptic number.

It is an amenable number.

1000121245 is a deficient number, since it is larger than the sum of its proper divisors (211676771).

1000121245 is a wasteful number, since it uses less digits than its factorization.

1000121245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942091.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1000121245 is about 31624.6935953536. The cubic root of 1000121245 is about 1000.0404133667.

Adding to 1000121245 its reverse (5421210001), we get a palindrome (6421331246).

The spelling of 1000121245 in words is "one billion, one hundred twenty-one thousand, two hundred forty-five".