20240012121 has 32 divisors (see below), whose sum is σ = 32201515008. Its totient is φ = 11056457280.

The previous prime is 20240012119. The next prime is 20240012131. The reversal of 20240012121 is 12121004202.

It is not a de Polignac number, because 20240012121 - 2¹ = 20240012119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20240012121.

It is not an unprimeable number, because it can be changed into a prime (20240012101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 892495 + ... + 914891.

It is an arithmetic number, because the mean of its divisors is an integer number (1006297344).

Almost surely, 2^20240012121 is an apocalyptic number.

20240012121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20240012121 is a deficient number, since it is larger than the sum of its proper divisors (11961502887).

20240012121 is a wasteful number, since it uses less digits than its factorization.

20240012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24301.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20240012121 its reverse (12121004202), we get a palindrome (32361016323).

The spelling of 20240012121 in words is "twenty billion, two hundred forty million, twelve thousand, one hundred twenty-one".