1123031221002 has 32 divisors (see below), whose sum is σ = 2495659642560. Its totient is φ = 374338534320.

The previous prime is 1123031220991. The next prime is 1123031221009. The reversal of 1123031221002 is 2001221303211.

1123031221002 is a `hidden beast` number, since 112 + 30 + 312 + 210 + 0 + 2 = 666.

It is a super-2 number, since 2×1123031221002² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1123031221009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7150377 + ... + 7305747.

It is an arithmetic number, because the mean of its divisors is an integer number (77989363830).

Almost surely, 2^{1123031221002} is an apocalyptic number.

1123031221002 is an abundant number, since it is smaller than the sum of its proper divisors (1372628421558).

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

1123031221002 is a wasteful number, since it uses less digits than its factorization.

1123031221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289235 (or 289229 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1123031221002 its reverse (2001221303211), we get a palindrome (3124252524213).

The spelling of 1123031221002 in words is "one trillion, one hundred twenty-three billion, thirty-one million, two hundred twenty-one thousand, two".