20011112202122 has 48 divisors (see below), whose sum is σ = 32173804236672. Its totient is φ = 9329579424000.

The previous prime is 20011112202097. The next prime is 20011112202187. The reversal of 20011112202122 is 22120221111002.

It is a super-2 number, since 2×20011112202122² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20011112202122.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11679578 + ... + 13282874.

It is an arithmetic number, because the mean of its divisors is an integer number (670287588264).

Almost surely, 2^{20011112202122} is an apocalyptic number.

20011112202122 is a deficient number, since it is larger than the sum of its proper divisors (12162692034550).

20011112202122 is a wasteful number, since it uses less digits than its factorization.

20011112202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603643 (or 1603620 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20011112202122 its reverse (22120221111002), we get a palindrome (42131333313124).

The spelling of 20011112202122 in words is "twenty trillion, eleven billion, one hundred twelve million, two hundred two thousand, one hundred twenty-two".