1201100312 has 8 divisors (see below), whose sum is σ = 2252063100. Its totient is φ = 600550152.

The previous prime is 1201100311. The next prime is 1201100323. The reversal of 1201100312 is 2130011021.

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 = 1201100293 and 1201100302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201100311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75068762 + ... + 75068777.

Almost surely, 2^1201100312 is an apocalyptic number.

It is an amenable number.

1201100312 is a deficient number, since it is larger than the sum of its proper divisors (1050962788).

1201100312 is a wasteful number, since it uses less digits than its factorization.

1201100312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150137545 (or 150137541 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1201100312 is about 34656.8941482066. The cubic root of 1201100312 is about 1062.9832632891.

Adding to 1201100312 its reverse (2130011021), we get a palindrome (3331111333).

The spelling of 1201100312 in words is "one billion, two hundred one million, one hundred thousand, three hundred twelve".