1202112011 has 4 divisors (see below), whose sum is σ = 1202182800. Its totient is φ = 1202041224.

The previous prime is 1202111987. The next prime is 1202112019. The reversal of 1202112011 is 1102112021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1102112021 = 41 ⋅26880781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202112011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202111983 and 1202112001.

It is not an unprimeable number, because it can be changed into a prime (1202112019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7025 + ... + 49533.

It is an arithmetic number, because the mean of its divisors is an integer number (300545700).

Almost surely, 2^1202112011 is an apocalyptic number.

1202112011 is a deficient number, since it is larger than the sum of its proper divisors (70789).

1202112011 is an equidigital number, since it uses as much as digits as its factorization.

1202112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70788.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1202112011 is about 34671.4870030116. The cubic root of 1202112011 is about 1063.2816334001.

Adding to 1202112011 its reverse (1102112021), we get a palindrome (2304224032).

The spelling of 1202112011 in words is "one billion, two hundred two million, one hundred twelve thousand, eleven".