20021115354152 has 32 divisors (see below), whose sum is σ = 40997234678400. Its totient is φ = 9090517363200.

The previous prime is 20021115354143. The next prime is 20021115354169. The reversal of 20021115354152 is 25145351112002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124789577 + ... + 124949912.

It is an arithmetic number, because the mean of its divisors is an integer number (1281163583700).

Almost surely, 2^{20021115354152} is an apocalyptic number.

20021115354152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20021115354152 is an abundant number, since it is smaller than the sum of its proper divisors (20976119324248).

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

20021115354152 is a wasteful number, since it uses less digits than its factorization.

20021115354152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249740417 (or 249740413 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 20021115354152 its reverse (25145351112002), we get a palindrome (45166466466154).

The spelling of 20021115354152 in words is "twenty trillion, twenty-one billion, one hundred fifteen million, three hundred fifty-four thousand, one hundred fifty-two".