1111201221029 has 4 divisors (see below), whose sum is σ = 1169685495840. Its totient is φ = 1052716946220.

The previous prime is 1111201220981. The next prime is 1111201221047. The reversal of 1111201221029 is 9201221021111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1111201221029 - 2¹² = 1111201216933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111201220995 and 1111201221013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111201221629) 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, 29242137377 + ... + 29242137414.

It is an arithmetic number, because the mean of its divisors is an integer number (292421373960).

Almost surely, 2^{1111201221029} is an apocalyptic number.

1111201221029 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1111201221029 is a deficient number, since it is larger than the sum of its proper divisors (58484274811).

1111201221029 is an equidigital number, since it uses as much as digits as its factorization.

1111201221029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58484274810.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1111201221029 in words is "one trillion, one hundred eleven billion, two hundred one million, two hundred twenty-one thousand, twenty-nine".