1111230132221 has 12 divisors (see below), whose sum is σ = 1221723343932. Its totient is φ = 1009970544000.

The previous prime is 1111230132217. The next prime is 1111230132251. The reversal of 1111230132221 is 1222310321111.

It can be written as a sum of positive squares in 2 ways, for example, as 497569408996 + 613660723225 = 705386^2 + 783365^2 .

It is not a de Polignac number, because 1111230132221 - 2² = 1111230132217 is a prime.

It is a super-2 number, since 2×1111230132221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111230132193 and 1111230132202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111230132251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 569570 + ... + 1595891.

It is an arithmetic number, because the mean of its divisors is an integer number (101810278661).

Almost surely, 2^{1111230132221} is an apocalyptic number.

1111230132221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111230132221 is a deficient number, since it is larger than the sum of its proper divisors (110493211711).

1111230132221 is a wasteful number, since it uses less digits than its factorization.

1111230132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169724 (or 2169713 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1111230132221 its reverse (1222310321111), we get a palindrome (2333540453332).

The spelling of 1111230132221 in words is "one trillion, one hundred eleven billion, two hundred thirty million, one hundred thirty-two thousand, two hundred twenty-one".