101121122100 has 288 divisors, whose sum is σ = 324195250176. Its totient is φ = 24225177600.

The previous prime is 101121122051. The next prime is 101121122107. The reversal of 101121122100 is 1221121101.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121122107) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9996045 + ... + 10006155.

It is an arithmetic number, because the mean of its divisors is an integer number (1125677952).

Almost surely, 2^101121122100 is an apocalyptic number.

101121122100 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 101121122100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162097625088).

101121122100 is an abundant number, since it is smaller than the sum of its proper divisors (223074128076).

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

101121122100 is a wasteful number, since it uses less digits than its factorization.

101121122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10235 (or 10228 counting only the distinct ones).

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

Adding to 101121122100 its reverse (1221121101), we get a palindrome (102342243201).

Subtracting from 101121122100 its reverse (1221121101), we obtain a palindrome (99900000999).

The spelling of 101121122100 in words is "one hundred one billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred".