1111131211021 has 8 divisors (see below), whose sum is σ = 1235202934784. Its totient is φ = 992573786160.

The previous prime is 1111131211013. The next prime is 1111131211033. The reversal of 1111131211021 is 1201121311111.

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

It is a cyclic number.

It is not a de Polignac number, because 1111131211021 - 2³ = 1111131211013 is a prime.

It is a super-2 number, since 2×1111131211021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111131210986 and 1111131211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111131211321) 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, 1378574301 + ... + 1378575106.

It is an arithmetic number, because the mean of its divisors is an integer number (154400366848).

Almost surely, 2^{1111131211021} is an apocalyptic number.

It is an amenable number.

1111131211021 is a deficient number, since it is larger than the sum of its proper divisors (124071723763).

1111131211021 is a wasteful number, since it uses less digits than its factorization.

1111131211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757149451.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 1111131211021 its reverse (1201121311111), we get a palindrome (2312252522132).

The spelling of 1111131211021 in words is "one trillion, one hundred eleven billion, one hundred thirty-one million, two hundred eleven thousand, twenty-one".