1201012112112 has 80 divisors (see below), whose sum is σ = 3134300641920. Its totient is φ = 396269253376.

The previous prime is 1201012112009. The next prime is 1201012112129. The reversal of 1201012112112 is 2112112101021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1201012112091 and 1201012112100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1566439 + ... + 2203577.

It is an arithmetic number, because the mean of its divisors is an integer number (39178758024).

Almost surely, 2^{1201012112112} is an apocalyptic number.

1201012112112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201012112112 is an abundant number, since it is smaller than the sum of its proper divisors (1933288529808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201012112112 is a wasteful number, since it uses less digits than its factorization.

1201012112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637550 (or 637544 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1201012112112 its reverse (2112112101021), we get a palindrome (3313124213133).

The spelling of 1201012112112 in words is "one trillion, two hundred one billion, twelve million, one hundred twelve thousand, one hundred twelve".