20121333333031 has 16 divisors (see below), whose sum is σ = 23996097874944. Its totient is φ = 16496670288384.

The previous prime is 20121333332957. The next prime is 20121333333041. The reversal of 20121333333031 is 13033333312102.

It is a cyclic number.

It is not a de Polignac number, because 20121333333031 - 2²¹ = 20121331235879 is a prime.

It is a super-2 number, since 2×20121333333031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121333333041) 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, 7189255 + ... + 9587911.

It is an arithmetic number, because the mean of its divisors is an integer number (1499756117184).

Almost surely, 2^{20121333333031} is an apocalyptic number.

20121333333031 is a deficient number, since it is larger than the sum of its proper divisors (3874764541913).

20121333333031 is a wasteful number, since it uses less digits than its factorization.

20121333333031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450790.

The product of its (nonzero) digits is 8748, while the sum is 28.

Adding to 20121333333031 its reverse (13033333312102), we get a palindrome (33154666645133).

The spelling of 20121333333031 in words is "twenty trillion, one hundred twenty-one billion, three hundred thirty-three million, three hundred thirty-three thousand, thirty-one".