12101021121020 has 96 divisors (see below), whose sum is σ = 28312532337600. Its totient is φ = 4313705324544.

The previous prime is 12101021121017. The next prime is 12101021121029. The reversal of 12101021121020 is 2012112010121.

12101021121020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12101021120986 and 12101021121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101021121029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132500012 + ... + 132591308.

It is an arithmetic number, because the mean of its divisors is an integer number (294922211850).

Almost surely, 2^{12101021121020} is an apocalyptic number.

12101021121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12101021121020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14156266168800).

12101021121020 is an abundant number, since it is smaller than the sum of its proper divisors (16211511216580).

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

12101021121020 is a wasteful number, since it uses less digits than its factorization.

12101021121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108927 (or 108925 counting only the distinct ones).

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

Adding to 12101021121020 its reverse (2012112010121), we get a palindrome (14113133131141).

The spelling of 12101021121020 in words is "twelve trillion, one hundred one billion, twenty-one million, one hundred twenty-one thousand, twenty".