20001122120202 has 24 divisors (see below), whose sum is σ = 42493733504736. Its totient is φ = 6274861841088.

The previous prime is 20001122120197. The next prime is 20001122120257. The reversal of 20001122120202 is 20202122110002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5767334518 + ... + 5767337985.

It is an arithmetic number, because the mean of its divisors is an integer number (1770572229364).

Almost surely, 2^{20001122120202} is an apocalyptic number.

20001122120202 is an abundant number, since it is smaller than the sum of its proper divisors (22492611384534).

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

20001122120202 is a wasteful number, since it uses less digits than its factorization.

20001122120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11534672542 (or 11534672525 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20001122120202 its reverse (20202122110002), we get a palindrome (40203244230204).

The spelling of 20001122120202 in words is "twenty trillion, one billion, one hundred twenty-two million, one hundred twenty thousand, two hundred two".