1122261100728 has 32 divisors (see below), whose sum is σ = 2844086355600. Its totient is φ = 368962553088.

The previous prime is 1122261100711. The next prime is 1122261100771. The reversal of 1122261100728 is 8270011622211.

It is a congruent number.

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, 320278243 + ... + 320281746.

Almost surely, 2^{1122261100728} is an apocalyptic number.

It is an amenable number.

1122261100728 is an abundant number, since it is smaller than the sum of its proper divisors (1721825254872).

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

1122261100728 is a wasteful number, since it uses less digits than its factorization.

1122261100728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640560071 (or 640560067 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

Adding to 1122261100728 its reverse (8270011622211), we get a palindrome (9392272722939).

The spelling of 1122261100728 in words is "one trillion, one hundred twenty-two billion, two hundred sixty-one million, one hundred thousand, seven hundred twenty-eight".