1125102021 has 8 divisors (see below), whose sum is σ = 1507675200. Its totient is φ = 746298432.

The previous prime is 1125101987. The next prime is 1125102023. The reversal of 1125102021 is 1202015211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1125102021 - 2¹¹ = 1125099973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125102023) 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, 941700 + ... + 942893.

It is an arithmetic number, because the mean of its divisors is an integer number (188459400).

Almost surely, 2^1125102021 is an apocalyptic number.

It is an amenable number.

1125102021 is a deficient number, since it is larger than the sum of its proper divisors (382573179).

1125102021 is a wasteful number, since it uses less digits than its factorization.

1125102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884795.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1125102021 is about 33542.5404672932. The cubic root of 1125102021 is about 1040.0733494248.

Adding to 1125102021 its reverse (1202015211), we get a palindrome (2327117232).

The spelling of 1125102021 in words is "one billion, one hundred twenty-five million, one hundred two thousand, twenty-one".