1123011120021 has 64 divisors (see below), whose sum is σ = 1772999663616. Its totient is φ = 618985785600.

The previous prime is 1123011120001. The next prime is 1123011120031. The reversal of 1123011120021 is 1200211103211.

It is not a de Polignac number, because 1123011120021 - 2⁶ = 1123011119957 is a prime.

It is a super-2 number, since 2×1123011120021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123011120001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 255750736 + ... + 255755126.

It is an arithmetic number, because the mean of its divisors is an integer number (27703119744).

Almost surely, 2^{1123011120021} is an apocalyptic number.

It is an amenable number.

1123011120021 is a deficient number, since it is larger than the sum of its proper divisors (649988543595).

1123011120021 is a wasteful number, since it uses less digits than its factorization.

1123011120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8282.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1123011120021 its reverse (1200211103211), we get a palindrome (2323222223232).

The spelling of 1123011120021 in words is "one trillion, one hundred twenty-three billion, eleven million, one hundred twenty thousand, twenty-one".