20001200111222 has 24 divisors (see below), whose sum is σ = 33358420975320. Its totient is φ = 8919917689280.

The previous prime is 20001200111209. The next prime is 20001200111237. The reversal of 20001200111222 is 22211100210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001200111197 and 20001200111206.

It is a congruent number.

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, 161765447 + ... + 161889042.

It is an arithmetic number, because the mean of its divisors is an integer number (1389934207305).

Almost surely, 2^{20001200111222} is an apocalyptic number.

20001200111222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20001200111222 is a deficient number, since it is larger than the sum of its proper divisors (13357220864098).

20001200111222 is a wasteful number, since it uses less digits than its factorization.

20001200111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323654608 (or 323654555 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20001200111222 its reverse (22211100210002), we get a palindrome (42212300321224).

The spelling of 20001200111222 in words is "twenty trillion, one billion, two hundred million, one hundred eleven thousand, two hundred twenty-two".