1101122231220 has 240 divisors, whose sum is σ = 3821363796096. Its totient is φ = 263178720000.

The previous prime is 1101122231159. The next prime is 1101122231221. The reversal of 1101122231220 is 221322211011.

1101122231220 is a `hidden beast` number, since 110 + 1 + 1 + 222 + 312 + 20 = 666.

It is a super-2 number, since 2×1101122231220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1101122231193 and 1101122231202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101122231221) 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, 830070 + ... + 1700370.

Almost surely, 2^{1101122231220} is an apocalyptic number.

1101122231220 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 1101122231220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1910681898048).

1101122231220 is an abundant number, since it is smaller than the sum of its proper divisors (2720241564876).

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

1101122231220 is a wasteful number, since it uses less digits than its factorization.

1101122231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870404 (or 870393 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1101122231220 its reverse (221322211011), we get a palindrome (1322444442231).

The spelling of 1101122231220 in words is "one trillion, one hundred one billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred twenty".