1123155026620 has 384 divisors, whose sum is σ = 2805544304640. Its totient is φ = 373844782080.

The previous prime is 1123155026611. The next prime is 1123155026621. The reversal of 1123155026620 is 266205513211.

It is a super-2 number, since 2×1123155026620² (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 (1123155026621) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1102212471 + ... + 1102213489.

It is an arithmetic number, because the mean of its divisors is an integer number (7306104960).

Almost surely, 2^{1123155026620} is an apocalyptic number.

1123155026620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123155026620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1402772152320).

1123155026620 is an abundant number, since it is smaller than the sum of its proper divisors (1682389278020).

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

1123155026620 is a wasteful number, since it uses less digits than its factorization.

1123155026620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 1123155026620 in words is "one trillion, one hundred twenty-three billion, one hundred fifty-five million, twenty-six thousand, six hundred twenty".