1101211223220 has 48 divisors (see below), whose sum is σ = 3425990473920. Its totient is φ = 293656326048.

The previous prime is 1101211223207. The next prime is 1101211223221. The reversal of 1101211223220 is 223221121011.

1101211223220 is a `hidden beast` number, since 1 + 10 + 1 + 211 + 223 + 220 = 666.

It is a super-4 number, since 4×1101211223220⁴ (a number of 49 digits) contains 4444 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 = 1101211223193 and 1101211223202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101211223221) 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, 1019639482 + ... + 1019640561.

It is an arithmetic number, because the mean of its divisors is an integer number (71374801540).

Almost surely, 2^{1101211223220} is an apocalyptic number.

1101211223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101211223220 is an abundant number, since it is smaller than the sum of its proper divisors (2324779250700).

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

1101211223220 is a wasteful number, since it uses less digits than its factorization.

1101211223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039280061 (or 2039280053 counting only the distinct ones).

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

Adding to 1101211223220 its reverse (223221121011), we get a palindrome (1324432344231).

The spelling of 1101211223220 in words is "one trillion, one hundred one billion, two hundred eleven million, two hundred twenty-three thousand, two hundred twenty".