111202010020 has 24 divisors (see below), whose sum is σ = 236480227200. Its totient is φ = 43917755232.

The previous prime is 111202010009. The next prime is 111202010081. The reversal of 111202010020 is 20010202111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111202009979 and 111202010006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35188930 + ... + 35192089.

It is an arithmetic number, because the mean of its divisors is an integer number (9853342800).

Almost surely, 2^111202010020 is an apocalyptic number.

111202010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111202010020 is an abundant number, since it is smaller than the sum of its proper divisors (125278217180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111202010020 is a wasteful number, since it uses less digits than its factorization.

111202010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70381107 (or 70381105 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111202010020 its reverse (20010202111), we get a palindrome (131212212131).

The spelling of 111202010020 in words is "one hundred eleven billion, two hundred two million, ten thousand, twenty".