1121250999 has 8 divisors (see below), whose sum is σ = 1630910592. Its totient is φ = 679546040.

The previous prime is 1121250979. The next prime is 1121251003. The reversal of 1121250999 is 9990521211.

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 1121250999 - 2²⁸ = 852815543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121250959) 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, 16988619 + ... + 16988684.

It is an arithmetic number, because the mean of its divisors is an integer number (203863824).

Almost surely, 2^1121250999 is an apocalyptic number.

1121250999 is a deficient number, since it is larger than the sum of its proper divisors (509659593).

1121250999 is a wasteful number, since it uses less digits than its factorization.

1121250999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33977317.

The product of its (nonzero) digits is 14580, while the sum is 39.

The square root of 1121250999 is about 33485.0862175984. The cubic root of 1121250999 is about 1038.8853315549.

The spelling of 1121250999 in words is "one billion, one hundred twenty-one million, two hundred fifty thousand, nine hundred ninety-nine".