1203012011 has 4 divisors (see below), whose sum is σ = 1203083712. Its totient is φ = 1202940312.

The previous prime is 1203011993. The next prime is 1203012023. The reversal of 1203012011 is 1102103021.

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.

It is a cyclic number.

It is not a de Polignac number, because 1203012011 - 2¹⁰ = 1203010987 is a prime.

It is a super-2 number, since 2×1203012011² = 2894475797220528242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203011983 and 1203012001.

It is not an unprimeable number, because it can be changed into a prime (1203012311) 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, 4325 + ... + 49241.

It is an arithmetic number, because the mean of its divisors is an integer number (300770928).

Almost surely, 2^1203012011 is an apocalyptic number.

1203012011 is a deficient number, since it is larger than the sum of its proper divisors (71701).

1203012011 is an equidigital number, since it uses as much as digits as its factorization.

1203012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71700.

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

The square root of 1203012011 is about 34684.4635391698. The cubic root of 1203012011 is about 1063.5469205898.

Adding to 1203012011 its reverse (1102103021), we get a palindrome (2305115032).

The spelling of 1203012011 in words is "one billion, two hundred three million, twelve thousand, eleven".