111121101102021 has 8 divisors (see below), whose sum is σ = 154603271098560. Its totient is φ = 70859832586752.

The previous prime is 111121101102019. The next prime is 111121101102047. The reversal of 111121101102021 is 120201101121111.

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

It is not a de Polignac number, because 111121101102021 - 2¹ = 111121101102019 is a prime.

It is a super-2 number, since 2×111121101102021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121101102421) 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, 805225370236 + ... + 805225370373.

It is an arithmetic number, because the mean of its divisors is an integer number (19325408887320).

Almost surely, 2^{111121101102021} is an apocalyptic number.

It is an amenable number.

111121101102021 is a deficient number, since it is larger than the sum of its proper divisors (43482169996539).

111121101102021 is a wasteful number, since it uses less digits than its factorization.

111121101102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610450740635.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111121101102021 its reverse (120201101121111), we get a palindrome (231322202223132).

The spelling of 111121101102021 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred one million, one hundred two thousand, twenty-one".