111210121102020 has 24 divisors (see below), whose sum is σ = 311388339085824. Its totient is φ = 29656032293856.

The previous prime is 111210121101971. The next prime is 111210121102033. The reversal of 111210121102020 is 20201121012111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 926751009124 + ... + 926751009243.

It is an arithmetic number, because the mean of its divisors is an integer number (12974514128576).

Almost surely, 2^{111210121102020} is an apocalyptic number.

111210121102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111210121102020 is an abundant number, since it is smaller than the sum of its proper divisors (200178217983804).

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

111210121102020 is a wasteful number, since it uses less digits than its factorization.

111210121102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853502018379 (or 1853502018377 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111210121102020 its reverse (20201121012111), we get a palindrome (131411242114131).

The spelling of 111210121102020 in words is "one hundred eleven trillion, two hundred ten billion, one hundred twenty-one million, one hundred two thousand, twenty".