20111112101012 has 6 divisors (see below), whose sum is σ = 35194446176778. Its totient is φ = 10055556050504.

The previous prime is 20111112101011. The next prime is 20111112101051. The reversal of 20111112101012 is 21010121111102.

It can be written as a sum of positive squares in only one way, i.e., 16140354460036 + 3970757640976 = 4017506^2 + 1992676^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111112101011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513889012623 + ... + 2513889012630.

It is an arithmetic number, because the mean of its divisors is an integer number (5865741029463).

Almost surely, 2^{20111112101012} is an apocalyptic number.

It is an amenable number.

20111112101012 is a deficient number, since it is larger than the sum of its proper divisors (15083334075766).

20111112101012 is a wasteful number, since it uses less digits than its factorization.

20111112101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027778025257 (or 5027778025255 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20111112101012 its reverse (21010121111102), we get a palindrome (41121233212114).

The spelling of 20111112101012 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, one hundred one thousand, twelve".