1220010101100 has 216 divisors, whose sum is σ = 4532212642048. Its totient is φ = 278859412800.

The previous prime is 1220010101077. The next prime is 1220010101111. The reversal of 1220010101100 is 11010100221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3416056 + ... + 3756255.

Almost surely, 2^{1220010101100} is an apocalyptic number.

1220010101100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220010101100 is an abundant number, since it is smaller than the sum of its proper divisors (3312202540948).

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

1220010101100 is a wasteful number, since it uses less digits than its factorization.

1220010101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7172347 (or 7172328 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1220010101100 its reverse (11010100221), we get a palindrome (1231020201321).

The spelling of 1220010101100 in words is "one trillion, two hundred twenty billion, ten million, one hundred one thousand, one hundred".