101121020000 has 480 divisors, whose sum is σ = 334082859264. Its totient is φ = 29088000000.

The previous prime is 101121019957. The next prime is 101121020003. The reversal of 101121020000 is 20121101.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 101121020000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121020003) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 20017475 + ... + 20022525.

Almost surely, 2^101121020000 is an apocalyptic number.

101121020000 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 101121020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167041429632).

101121020000 is an abundant number, since it is smaller than the sum of its proper divisors (232961839264).

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

101121020000 is a wasteful number, since it uses less digits than its factorization.

101121020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112 (or 5089 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 101121020000 its reverse (20121101), we get a palindrome (101141141101).

The spelling of 101121020000 in words is "one hundred one billion, one hundred twenty-one million, twenty thousand".