111202101020 has 24 divisors (see below), whose sum is σ = 247261143024. Its totient is φ = 41864320256.

The previous prime is 111202101013. The next prime is 111202101083. The reversal of 111202101020 is 20101202111.

It is a junction number, because it is equal to n+sod(n) for n = 111202100992 and 111202101010.

It is a congruent number.

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, 163532162 + ... + 163532841.

It is an arithmetic number, because the mean of its divisors is an integer number (10302547626).

Almost surely, 2^111202101020 is an apocalyptic number.

111202101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111202101020 is an abundant number, since it is smaller than the sum of its proper divisors (136059042004).

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

111202101020 is a wasteful number, since it uses less digits than its factorization.

111202101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327065029 (or 327065027 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111202101020 its reverse (20101202111), we get a palindrome (131303303131).

The spelling of 111202101020 in words is "one hundred eleven billion, two hundred two million, one hundred one thousand, twenty".