111202020019 has 4 divisors (see below), whose sum is σ = 111303761296. Its totient is φ = 111100278744.

The previous prime is 111202019983. The next prime is 111202020029. The reversal of 111202020019 is 910020202111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910020202111 = 101 ⋅9010101011.

It is a cyclic number.

It is not a de Polignac number, because 111202020019 - 2⁹ = 111202019507 is a prime.

It is a super-2 number, since 2×111202020019² (a number of 23 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 = 111202019978 and 111202020005.

It is not an unprimeable number, because it can be changed into a prime (111202020029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50868999 + ... + 50871184.

It is an arithmetic number, because the mean of its divisors is an integer number (27825940324).

Almost surely, 2^111202020019 is an apocalyptic number.

111202020019 is a deficient number, since it is larger than the sum of its proper divisors (101741277).

111202020019 is a wasteful number, since it uses less digits than its factorization.

111202020019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101741276.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 111202020019 in words is "one hundred eleven billion, two hundred two million, twenty thousand, nineteen".