20011201111222 has 4 divisors (see below), whose sum is σ = 30016801666836. Its totient is φ = 10005600555610.

The previous prime is 20011201111201. The next prime is 20011201111271. The reversal of 20011201111222 is 22211110211002.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×20011201111222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20011201111196 and 20011201111205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5002800277804 + ... + 5002800277807.

It is an arithmetic number, because the mean of its divisors is an integer number (7504200416709).

Almost surely, 2^{20011201111222} is an apocalyptic number.

20011201111222 is a deficient number, since it is larger than the sum of its proper divisors (10005600555614).

20011201111222 is a wasteful number, since it uses less digits than its factorization.

20011201111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10005600555613.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20011201111222 its reverse (22211110211002), we get a palindrome (42222311322224).

The spelling of 20011201111222 in words is "twenty trillion, eleven billion, two hundred one million, one hundred eleven thousand, two hundred twenty-two".