1201203011 has 4 divisors (see below), whose sum is σ = 1207492224. Its totient is φ = 1194913800.

The previous prime is 1201202987. The next prime is 1201203019. The reversal of 1201203011 is 1103021021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201203011 - 2¹⁰ = 1201201987 is a prime.

It is a super-4 number, since 4×1201203011⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201202983 and 1201203001.

It is not an unprimeable number, because it can be changed into a prime (1201203019) 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, 3144320 + ... + 3144701.

It is an arithmetic number, because the mean of its divisors is an integer number (301873056).

Almost surely, 2^1201203011 is an apocalyptic number.

1201203011 is a deficient number, since it is larger than the sum of its proper divisors (6289213).

1201203011 is an equidigital number, since it uses as much as digits as its factorization.

1201203011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6289212.

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

The square root of 1201203011 is about 34658.3757697905. The cubic root of 1201203011 is about 1063.0135589011.

Adding to 1201203011 its reverse (1103021021), we get a palindrome (2304224032).

The spelling of 1201203011 in words is "one billion, two hundred one million, two hundred three thousand, eleven".