11213031101 has 4 divisors (see below), whose sum is σ = 11261155932. Its totient is φ = 11164906272.

The previous prime is 11213031097. The next prime is 11213031103. The reversal of 11213031101 is 10113031211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10113031211 = 251 ⋅40290961.

It can be written as a sum of positive squares in 2 ways, for example, as 3099705625 + 8113325476 = 55675^2 + 90074^2 .

It is a cyclic number.

It is not a de Polignac number, because 11213031101 - 2² = 11213031097 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 (11213031103) 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, 24062066 + ... + 24062531.

It is an arithmetic number, because the mean of its divisors is an integer number (2815288983).

Almost surely, 2^11213031101 is an apocalyptic number.

It is an amenable number.

11213031101 is a deficient number, since it is larger than the sum of its proper divisors (48124831).

11213031101 is an equidigital number, since it uses as much as digits as its factorization.

11213031101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48124830.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11213031101 its reverse (10113031211), we get a palindrome (21326062312).

The spelling of 11213031101 in words is "eleven billion, two hundred thirteen million, thirty-one thousand, one hundred one".