1123302220221 has 32 divisors (see below), whose sum is σ = 1584115793920. Its totient is φ = 706912920000.

The previous prime is 1123302220211. The next prime is 1123302220273. The reversal of 1123302220221 is 1220222033211.

It is not a de Polignac number, because 1123302220221 - 2⁷ = 1123302220093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123302220211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2816235 + ... + 3190263.

It is an arithmetic number, because the mean of its divisors is an integer number (49503618560).

Almost surely, 2^{1123302220221} is an apocalyptic number.

It is an amenable number.

1123302220221 is a deficient number, since it is larger than the sum of its proper divisors (460813573699).

1123302220221 is a wasteful number, since it uses less digits than its factorization.

1123302220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374857.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1123302220221 its reverse (1220222033211), we get a palindrome (2343524253432).

The spelling of 1123302220221 in words is "one trillion, one hundred twenty-three billion, three hundred two million, two hundred twenty thousand, two hundred twenty-one".