20121301124 has 12 divisors (see below), whose sum is σ = 35218946700. Its totient is φ = 10058744928.

The previous prime is 20121301121. The next prime is 20121301139. The reversal of 20121301124 is 42110312102.

It can be written as a sum of positive squares in 2 ways, for example, as 574465024 + 19546836100 = 23968^2 + 139810^2 .

It is not an unprimeable number, because it can be changed into a prime (20121301121) 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, 452519 + ... + 494990.

It is an arithmetic number, because the mean of its divisors is an integer number (2934912225).

Almost surely, 2^20121301124 is an apocalyptic number.

It is an amenable number.

20121301124 is a deficient number, since it is larger than the sum of its proper divisors (15097645576).

20121301124 is a wasteful number, since it uses less digits than its factorization.

20121301124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952822 (or 952820 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20121301124 its reverse (42110312102), we get a palindrome (62231613226).

The spelling of 20121301124 in words is "twenty billion, one hundred twenty-one million, three hundred one thousand, one hundred twenty-four".