1111101212021 has 8 divisors (see below), whose sum is σ = 1169629786080. Its totient is φ = 1052577594288.

The previous prime is 1111101211973. The next prime is 1111101212041. The reversal of 1111101212021 is 1202121011111.

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

It is not a de Polignac number, because 1111101212021 - 2¹⁰ = 1111101210997 is a prime.

It is a super-4 number, since 4×1111101212021⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111101211987 and 1111101212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111101212041) 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, 774446 + ... + 1679871.

It is an arithmetic number, because the mean of its divisors is an integer number (146203723260).

Almost surely, 2^{1111101212021} is an apocalyptic number.

It is an amenable number.

1111101212021 is a deficient number, since it is larger than the sum of its proper divisors (58528574059).

1111101212021 is a wasteful number, since it uses less digits than its factorization.

1111101212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478163.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1111101212021 its reverse (1202121011111), we get a palindrome (2313222223132).

The spelling of 1111101212021 in words is "one trillion, one hundred eleven billion, one hundred one million, two hundred twelve thousand, twenty-one".