110021012121020 has 144 divisors (see below), whose sum is σ = 315752611412448. Its totient is φ = 31654397053440.

The previous prime is 110021012121019. The next prime is 110021012121047. The reversal of 110021012121020 is 20121210120011.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 110021012120986 and 110021012121004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 392399507 + ... + 392679786.

It is an arithmetic number, because the mean of its divisors is an integer number (2192726468142).

Almost surely, 2^{110021012121020} is an apocalyptic number.

110021012121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

110021012121020 is an abundant number, since it is smaller than the sum of its proper divisors (205731599291428).

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

110021012121020 is a wasteful number, since it uses less digits than its factorization.

110021012121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785079340 (or 785079331 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 110021012121020 its reverse (20121210120011), we get a palindrome (130142222241031).

The spelling of 110021012121020 in words is "one hundred ten trillion, twenty-one billion, twelve million, one hundred twenty-one thousand, twenty".