1121551203 has 8 divisors (see below), whose sum is σ = 1495557648. Its totient is φ = 747622784.

The previous prime is 1121551199. The next prime is 1121551213. The reversal of 1121551203 is 3021551211.

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 1121551203 - 2² = 1121551199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121551203.

It is not an unprimeable number, because it can be changed into a prime (1121551213) 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, 39775 + ... + 61847.

It is an arithmetic number, because the mean of its divisors is an integer number (186944706).

Almost surely, 2^1121551203 is an apocalyptic number.

1121551203 is a deficient number, since it is larger than the sum of its proper divisors (374006445).

1121551203 is a wasteful number, since it uses less digits than its factorization.

1121551203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39013.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1121551203 is about 33489.5685699294. The cubic root of 1121551203 is about 1038.9780404139.

The spelling of 1121551203 in words is "one billion, one hundred twenty-one million, five hundred fifty-one thousand, two hundred three".