123521222 has 16 divisors (see below), whose sum is σ = 203001552. Its totient is φ = 55902720.

The previous prime is 123521197. The next prime is 123521227. The reversal of 123521222 is 222125321.

It is a junction number, because it is equal to n+sod(n) for n = 123521194 and 123521203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123521227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6923 + ... + 17174.

It is an arithmetic number, because the mean of its divisors is an integer number (12687597).

Almost surely, 2^123521222 is an apocalyptic number.

123521222 is a deficient number, since it is larger than the sum of its proper divisors (79480330).

123521222 is a wasteful number, since it uses less digits than its factorization.

123521222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24343.

The product of its digits is 480, while the sum is 20.

The square root of 123521222 is about 11114.0101673518. The cubic root of 123521222 is about 498.0204692586.

Adding to 123521222 its reverse (222125321), we get a palindrome (345646543).

The spelling of 123521222 in words is "one hundred twenty-three million, five hundred twenty-one thousand, two hundred twenty-two".