101121000 has 128 divisors (see below), whose sum is σ = 324380160. Its totient is φ = 26208000.

The previous prime is 101120989. The next prime is 101121011. The reversal of 101121000 is 121101.

It is an interprime number because it is at equal distance from previous prime (101120989) and next prime (101121011).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 101121000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110545 + ... + 111455.

It is an arithmetic number, because the mean of its divisors is an integer number (2534220).

Almost surely, 2^101121000 is an apocalyptic number.

101121000 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 101121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162190080).

101121000 is an abundant number, since it is smaller than the sum of its proper divisors (223259160).

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

101121000 is a wasteful number, since it uses less digits than its factorization.

101121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 101121000 is about 10055.8937941886. The cubic root of 101121000 is about 465.8868495503.

Adding to 101121000 its reverse (121101), we get a palindrome (101242101).

The spelling of 101121000 in words is "one hundred one million, one hundred twenty-one thousand".