111222121202020 has 96 divisors (see below), whose sum is σ = 235161524505600. Its totient is φ = 44186264623104.

The previous prime is 111222121202009. The next prime is 111222121202057. The reversal of 111222121202020 is 20202121222111.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2293830217 + ... + 2293878703.

It is an arithmetic number, because the mean of its divisors is an integer number (2449599213600).

Almost surely, 2^{111222121202020} is an apocalyptic number.

111222121202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222121202020 is an abundant number, since it is smaller than the sum of its proper divisors (123939403303580).

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

111222121202020 is a wasteful number, since it uses less digits than its factorization.

111222121202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50077 (or 50075 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111222121202020 its reverse (20202121222111), we get a palindrome (131424242424131).

The spelling of 111222121202020 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred two thousand, twenty".