111020202121019 has 8 divisors (see below), whose sum is σ = 111171710307600. Its totient is φ = 110868782205600.

The previous prime is 111020202121013. The next prime is 111020202121057. The reversal of 111020202121019 is 910121202020111.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111020202121019 is a prime.

It is a super-2 number, since 2×111020202121019² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111020202120985 and 111020202121003.

It is not an unprimeable number, because it can be changed into a prime (111020202121013) 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, 19550444 + ... + 24581705.

It is an arithmetic number, because the mean of its divisors is an integer number (13896463788450).

Almost surely, 2^{111020202121019} is an apocalyptic number.

111020202121019 is a deficient number, since it is larger than the sum of its proper divisors (151508186581).

111020202121019 is a wasteful number, since it uses less digits than its factorization.

111020202121019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44135581.

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

The spelling of 111020202121019 in words is "one hundred eleven trillion, twenty billion, two hundred two million, one hundred twenty-one thousand, nineteen".