11020101221231 has 4 divisors (see below), whose sum is σ = 11020107898632. Its totient is φ = 11020094543832.

The previous prime is 11020101221221. The next prime is 11020101221249. The reversal of 11020101221231 is 13212210102011.

It is a happy number.

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 11020101221231 - 2⁶ = 11020101221167 is a prime.

It is a super-2 number, since 2×11020101221231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020101221221) 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, 1135181 + ... + 4829993.

It is an arithmetic number, because the mean of its divisors is an integer number (2755026974658).

Almost surely, 2^{11020101221231} is an apocalyptic number.

11020101221231 is a deficient number, since it is larger than the sum of its proper divisors (6677401).

11020101221231 is an equidigital number, since it uses as much as digits as its factorization.

11020101221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6677400.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11020101221231 its reverse (13212210102011), we get a palindrome (24232311323242).

The spelling of 11020101221231 in words is "eleven trillion, twenty billion, one hundred one million, two hundred twenty-one thousand, two hundred thirty-one".