20543515521122 has 16 divisors (see below), whose sum is σ = 33618919813344. Its totient is φ = 9337334364000.

The previous prime is 20543515521121. The next prime is 20543515521157. The reversal of 20543515521122 is 22112551534502.

It is not an unprimeable number, because it can be changed into a prime (20543515521121) 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, 31026779 + ... + 31681982.

It is an arithmetic number, because the mean of its divisors is an integer number (2101182488334).

Almost surely, 2^{20543515521122} is an apocalyptic number.

20543515521122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20543515521122 is a deficient number, since it is larger than the sum of its proper divisors (13075404292222).

20543515521122 is a wasteful number, since it uses less digits than its factorization.

20543515521122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62723665.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 20543515521122 in words is "twenty trillion, five hundred forty-three billion, five hundred fifteen million, five hundred twenty-one thousand, one hundred twenty-two".