20101220110012 has 6 divisors (see below), whose sum is σ = 35177135192528. Its totient is φ = 10050610055004.

The previous prime is 20101220109973. The next prime is 20101220110019. The reversal of 20101220110012 is 21001102210102.

It is a super-2 number, since 2×20101220110012² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20101220109974 and 20101220110001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101220110019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2512652513748 + ... + 2512652513755.

Almost surely, 2^{20101220110012} is an apocalyptic number.

It is an amenable number.

20101220110012 is a deficient number, since it is larger than the sum of its proper divisors (15075915082516).

20101220110012 is a wasteful number, since it uses less digits than its factorization.

20101220110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025305027507 (or 5025305027505 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20101220110012 its reverse (21001102210102), we get a palindrome (41102322320114).

The spelling of 20101220110012 in words is "twenty trillion, one hundred one billion, two hundred twenty million, one hundred ten thousand, twelve".