20121141502554 has 16 divisors (see below), whose sum is σ = 40243442440320. Its totient is φ = 6706853928320.

The previous prime is 20121141502531. The next prime is 20121141502559. The reversal of 20121141502554 is 45520514112102.

It is not an unprimeable number, because it can be changed into a prime (20121141502559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48084114 + ... + 48500765.

It is an arithmetic number, because the mean of its divisors is an integer number (2515215152520).

Almost surely, 2^{20121141502554} is an apocalyptic number.

20121141502554 is an abundant number, since it is smaller than the sum of its proper divisors (20122300937766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121141502554 is a wasteful number, since it uses less digits than its factorization.

20121141502554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96619605.

The product of its (nonzero) digits is 16000, while the sum is 33.

Adding to 20121141502554 its reverse (45520514112102), we get a palindrome (65641655614656).

The spelling of 20121141502554 in words is "twenty trillion, one hundred twenty-one billion, one hundred forty-one million, five hundred two thousand, five hundred fifty-four".