20331111122121 has 8 divisors (see below), whose sum is σ = 27119447942400. Its totient is φ = 13548424191632.

The previous prime is 20331111122117. The next prime is 20331111122149. The reversal of 20331111122121 is 12122111113302.

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

It is a cyclic number.

It is not a de Polignac number, because 20331111122121 - 2² = 20331111122117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20331111127121) 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, 1412464050 + ... + 1412478443.

It is an arithmetic number, because the mean of its divisors is an integer number (3389930992800).

Almost surely, 2^{20331111122121} is an apocalyptic number.

It is an amenable number.

20331111122121 is a deficient number, since it is larger than the sum of its proper divisors (6788336820279).

20331111122121 is a wasteful number, since it uses less digits than its factorization.

20331111122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824944895.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 20331111122121 its reverse (12122111113302), we get a palindrome (32453222235423).

The spelling of 20331111122121 in words is "twenty trillion, three hundred thirty-one billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twenty-one".