1111222011021 has 8 divisors (see below), whose sum is σ = 1481642632320. Its totient is φ = 740808031872.

The previous prime is 1111222010993. The next prime is 1111222011043. The reversal of 1111222011021 is 1201102221111.

It is a happy number.

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

It is not a de Polignac number, because 1111222011021 - 2²⁷ = 1111087793293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111222011061) 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, 1256101 + ... + 1949418.

It is an arithmetic number, because the mean of its divisors is an integer number (185205329040).

Almost surely, 2^{1111222011021} is an apocalyptic number.

It is an amenable number.

1111222011021 is a deficient number, since it is larger than the sum of its proper divisors (370420621299).

1111222011021 is a wasteful number, since it uses less digits than its factorization.

1111222011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321075.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1111222011021 its reverse (1201102221111), we get a palindrome (2312324232132).

The spelling of 1111222011021 in words is "one trillion, one hundred eleven billion, two hundred twenty-two million, eleven thousand, twenty-one".