1131203030221 has 32 divisors (see below), whose sum is σ = 1258494451200. Its totient is φ = 1008191508480.

The previous prime is 1131203030219. The next prime is 1131203030249. The reversal of 1131203030221 is 1220303021311.

It is a cyclic number.

It is not a de Polignac number, because 1131203030221 - 2¹ = 1131203030219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131203730221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93412315 + ... + 93424423.

It is an arithmetic number, because the mean of its divisors is an integer number (39327951600).

Almost surely, 2^{1131203030221} is an apocalyptic number.

1131203030221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1131203030221 is a deficient number, since it is larger than the sum of its proper divisors (127291420979).

1131203030221 is a wasteful number, since it uses less digits than its factorization.

1131203030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12949.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1131203030221 its reverse (1220303021311), we get a palindrome (2351506051532).

The spelling of 1131203030221 in words is "one trillion, one hundred thirty-one billion, two hundred three million, thirty thousand, two hundred twenty-one".