20120211112 has 8 divisors (see below), whose sum is σ = 37725395850. Its totient is φ = 10060105552.

The previous prime is 20120211091. The next prime is 20120211113. The reversal of 20120211112 is 21111202102.

It can be written as a sum of positive squares in only one way, i.e., 12359658276 + 7760552836 = 111174^2 + 88094^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20120211092 and 20120211101.

It is not an unprimeable number, because it can be changed into a prime (20120211113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257513187 + ... + 1257513202.

Almost surely, 2^20120211112 is an apocalyptic number.

It is an amenable number.

20120211112 is a deficient number, since it is larger than the sum of its proper divisors (17605184738).

20120211112 is a wasteful number, since it uses less digits than its factorization.

20120211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515026395 (or 2515026391 counting only the distinct ones).

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

Adding to 20120211112 its reverse (21111202102), we get a palindrome (41231413214).

The spelling of 20120211112 in words is "twenty billion, one hundred twenty million, two hundred eleven thousand, one hundred twelve".