101001002012100 has 288 divisors, whose sum is σ = 335840184852480. Its totient is φ = 26012945232000.

The previous prime is 101001002012089. The next prime is 101001002012101. The reversal of 101001002012100 is 1210200100101.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (101001002012101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 40901595 + ... + 43300605.

It is an arithmetic number, because the mean of its divisors is an integer number (1166111752960).

Almost surely, 2^{101001002012100} is an apocalyptic number.

101001002012100 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 101001002012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167920092426240).

101001002012100 is an abundant number, since it is smaller than the sum of its proper divisors (234839182840380).

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

101001002012100 is a wasteful number, since it uses less digits than its factorization.

101001002012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399568 (or 2399555 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101001002012100 its reverse (1210200100101), we get a palindrome (102211202112201).

The spelling of 101001002012100 in words is "one hundred one trillion, one billion, two million, twelve thousand, one hundred".