1122555138 has 16 divisors (see below), whose sum is σ = 2246235840. Its totient is φ = 373997456.

The previous prime is 1122555103. The next prime is 1122555143. The reversal of 1122555138 is 8315552211.

It is a junction number, because it is equal to n+sod(n) for n = 1122555099 and 1122555108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33645 + ... + 58112.

It is an arithmetic number, because the mean of its divisors is an integer number (140389740).

Almost surely, 2^1122555138 is an apocalyptic number.

1122555138 is an abundant number, since it is smaller than the sum of its proper divisors (1123680702).

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

1122555138 is a wasteful number, since it uses less digits than its factorization.

1122555138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93801.

The product of its digits is 12000, while the sum is 33.

The square root of 1122555138 is about 33504.5539889729. The cubic root of 1122555138 is about 1039.2879550345.

The spelling of 1122555138 in words is "one billion, one hundred twenty-two million, five hundred fifty-five thousand, one hundred thirty-eight".