1131021421211 has 8 divisors (see below), whose sum is σ = 1233863442864. Its totient is φ = 1028183048320.

The previous prime is 1131021421091. The next prime is 1131021421241. The reversal of 1131021421211 is 1121241201311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131021421211 - 2¹⁰ = 1131021420187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131021421241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242690 + ... + 1523463.

It is an arithmetic number, because the mean of its divisors is an integer number (154232930358).

Almost surely, 2^{1131021421211} is an apocalyptic number.

1131021421211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131021421211 is a deficient number, since it is larger than the sum of its proper divisors (102842021653).

1131021421211 is a wasteful number, since it uses less digits than its factorization.

1131021421211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824381.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 1131021421211 its reverse (1121241201311), we get a palindrome (2252262622522).

The spelling of 1131021421211 in words is "one trillion, one hundred thirty-one billion, twenty-one million, four hundred twenty-one thousand, two hundred eleven".