1101122000 has 80 divisors (see below), whose sum is σ = 2904617664. Its totient is φ = 400400000.

The previous prime is 1101121951. The next prime is 1101122003. The reversal of 1101122000 is 2211011.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101122003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3026 + ... + 47025.

Almost surely, 2^1101122000 is an apocalyptic number.

1101122000 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 1101122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1452308832).

1101122000 is an abundant number, since it is smaller than the sum of its proper divisors (1803495664).

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

1101122000 is a wasteful number, since it uses less digits than its factorization.

1101122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50085 (or 50069 counting only the distinct ones).

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

The square root of 1101122000 is about 33183.1583789126. The cubic root of 1101122000 is about 1032.6309714316.

Adding to 1101122000 its reverse (2211011), we get a palindrome (1103333011).

The spelling of 1101122000 in words is "one billion, one hundred one million, one hundred twenty-two thousand".