10021201121100 has 144 divisors (see below), whose sum is σ = 31249051495200. Its totient is φ = 2464859904000.

The previous prime is 10021201120999. The next prime is 10021201121131. The reversal of 10021201121100 is 112110212001.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 4086376 + ... + 6061424.

It is an arithmetic number, because the mean of its divisors is an integer number (217007302050).

Almost surely, 2^{10021201121100} is an apocalyptic number.

10021201121100 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 10021201121100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15624525747600).

10021201121100 is an abundant number, since it is smaller than the sum of its proper divisors (21227850374100).

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

10021201121100 is a wasteful number, since it uses less digits than its factorization.

10021201121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976380 (or 1976373 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10021201121100 its reverse (112110212001), we get a palindrome (10133311333101).

Subtracting from 10021201121100 its reverse (112110212001), we obtain a palindrome (9909090909099).

The spelling of 10021201121100 in words is "ten trillion, twenty-one billion, two hundred one million, one hundred twenty-one thousand, one hundred".