20033012121 has 16 divisors (see below), whose sum is σ = 29338967040. Its totient is φ = 12102322320.

The previous prime is 20033012119. The next prime is 20033012123. The reversal of 20033012121 is 12121033002.

It is an interprime number because it is at equal distance from previous prime (20033012119) and next prime (20033012123).

It is not a de Polignac number, because 20033012121 - 2¹ = 20033012119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20033012121.

It is not an unprimeable number, because it can be changed into a prime (20033012123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7639045 + ... + 7641666.

It is an arithmetic number, because the mean of its divisors is an integer number (1833685440).

Almost surely, 2^20033012121 is an apocalyptic number.

It is an amenable number.

20033012121 is a deficient number, since it is larger than the sum of its proper divisors (9305954919).

20033012121 is a wasteful number, since it uses less digits than its factorization.

20033012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15280756.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20033012121 its reverse (12121033002), we get a palindrome (32154045123).

The spelling of 20033012121 in words is "twenty billion, thirty-three million, twelve thousand, one hundred twenty-one".