1220126055 has 32 divisors (see below), whose sum is σ = 2028638208. Its totient is φ = 625536000.

The previous prime is 1220126041. The next prime is 1220126069. The reversal of 1220126055 is 5506210221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1220126041) and next prime (1220126069).

It is not a de Polignac number, because 1220126055 - 2⁷ = 1220125927 is a prime.

It is a congruent number.

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, 61527 + ... + 78903.

It is an arithmetic number, because the mean of its divisors is an integer number (63394944).

Almost surely, 2^1220126055 is an apocalyptic number.

1220126055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220126055 is a deficient number, since it is larger than the sum of its proper divisors (808512153).

1220126055 is a wasteful number, since it uses less digits than its factorization.

1220126055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17567.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1220126055 is about 34930.3028186130. The cubic root of 1220126055 is about 1068.5665303883.

Adding to 1220126055 its reverse (5506210221), we get a palindrome (6726336276).

The spelling of 1220126055 in words is "one billion, two hundred twenty million, one hundred twenty-six thousand, fifty-five".