10021220100000 has 288 divisors, whose sum is σ = 36533369839680. Its totient is φ = 2672324640000.

The previous prime is 10021220099993. The next prime is 10021220100013. The reversal of 10021220100000 is 102212001.

10021220100000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 844219 + ... + 4555781.

It is an arithmetic number, because the mean of its divisors is an integer number (126851978610).

Almost surely, 2^{10021220100000} is an apocalyptic number.

10021220100000 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 10021220100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18266684919840).

10021220100000 is an abundant number, since it is smaller than the sum of its proper divisors (26512149739680).

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

10021220100000 is an frugal number, since it uses more digits than its factorization.

10021220100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711607 (or 3711573 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10021220100000 its reverse (102212001), we get a palindrome (10021322312001).

The spelling of 10021220100000 in words is "ten trillion, twenty-one billion, two hundred twenty million, one hundred thousand".