1122215314545 has 72 divisors (see below), whose sum is σ = 2108864454840. Its totient is φ = 551805696000.

The previous prime is 1122215314529. The next prime is 1122215314547. The reversal of 1122215314545 is 5454135122211.

1122215314545 is a `hidden beast` number, since 1 + 1 + 22 + 21 + 531 + 45 + 45 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 362697835536 + 759517479009 = 602244^2 + 871503^2 .

It is not a de Polignac number, because 1122215314545 - 2⁴ = 1122215314529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1122215314547) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6215545 + ... + 6393545.

It is an arithmetic number, because the mean of its divisors is an integer number (29289784095).

Almost surely, 2^{1122215314545} is an apocalyptic number.

1122215314545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1122215314545 is a deficient number, since it is larger than the sum of its proper divisors (986649140295).

1122215314545 is a wasteful number, since it uses less digits than its factorization.

1122215314545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178867 (or 178851 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The spelling of 1122215314545 in words is "one trillion, one hundred twenty-two billion, two hundred fifteen million, three hundred fourteen thousand, five hundred forty-five".