20102222121112 has 8 divisors (see below), whose sum is σ = 37691666477100. Its totient is φ = 10051111060552.

The previous prime is 20102222121101. The next prime is 20102222121161. The reversal of 20102222121112 is 21112122220102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20102222121112² (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 20102222121112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256388882562 + ... + 1256388882577.

Almost surely, 2^{20102222121112} is an apocalyptic number.

It is an amenable number.

20102222121112 is a deficient number, since it is larger than the sum of its proper divisors (17589444355988).

20102222121112 is a wasteful number, since it uses less digits than its factorization.

20102222121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512777765145 (or 2512777765141 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20102222121112 its reverse (21112122220102), we get a palindrome (41214344341214).

The spelling of 20102222121112 in words is "twenty trillion, one hundred two billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".