221040123122 has 32 divisors (see below), whose sum is σ = 408109763712. Its totient is φ = 87436796544.

The previous prime is 221040123113. The next prime is 221040123131. The reversal of 221040123122 is 221321040122.

It is an interprime number because it is at equal distance from previous prime (221040123113) and next prime (221040123131).

It is a junction number, because it is equal to n+sod(n) for n = 221040123094 and 221040123103.

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, 2325413 + ... + 2418599.

It is an arithmetic number, because the mean of its divisors is an integer number (12753430116).

Almost surely, 2^221040123122 is an apocalyptic number.

221040123122 is a deficient number, since it is larger than the sum of its proper divisors (187069640590).

221040123122 is a wasteful number, since it uses less digits than its factorization.

221040123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106242.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221040123122 its reverse (221321040122), we get a palindrome (442361163244).

The spelling of 221040123122 in words is "two hundred twenty-one billion, forty million, one hundred twenty-three thousand, one hundred twenty-two".