123011122 has 32 divisors (see below), whose sum is σ = 202532400. Its totient is φ = 55695360.

The previous prime is 123011117. The next prime is 123011143. The reversal of 123011122 is 221110321.

It can be written as a sum of positive squares in 8 ways, for example, as 2253001 + 120758121 = 1501^2 + 10989^2 .

It is a super-2 number, since 2×123011122² = 30263472271397768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437622 + ... + 437902.

Almost surely, 2^123011122 is an apocalyptic number.

123011122 is a deficient number, since it is larger than the sum of its proper divisors (79521278).

123011122 is a wasteful number, since it uses less digits than its factorization.

123011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 123011122 is about 11091.0379135589. The cubic root of 123011122 is about 497.3339725275. Note that the first 3 decimals are identical.

Adding to 123011122 its reverse (221110321), we get a palindrome (344121443).

The spelling of 123011122 in words is "one hundred twenty-three million, eleven thousand, one hundred twenty-two".