20121001011112 has 32 divisors (see below), whose sum is σ = 38546111462400. Its totient is φ = 9843764932800.

The previous prime is 20121001011079. The next prime is 20121001011131. The reversal of 20121001011112 is 21111010012102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20121001011092 and 20121001011101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107842812 + ... + 108029227.

It is an arithmetic number, because the mean of its divisors is an integer number (1204565983200).

Almost surely, 2^{20121001011112} is an apocalyptic number.

It is an amenable number.

20121001011112 is a deficient number, since it is larger than the sum of its proper divisors (18425110451288).

20121001011112 is a wasteful number, since it uses less digits than its factorization.

20121001011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215872297 (or 215872293 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20121001011112 its reverse (21111010012102), we get a palindrome (41232011023214).

The spelling of 20121001011112 in words is "twenty trillion, one hundred twenty-one billion, one million, eleven thousand, one hundred twelve".