220221102123 has 24 divisors (see below), whose sum is σ = 356393861616. Its totient is φ = 129860107200.

The previous prime is 220221102091. The next prime is 220221102139. The reversal of 220221102123 is 321201122022.

220221102123 is a `hidden beast` number, since 220 + 221 + 10 + 212 + 3 = 666.

It is not a de Polignac number, because 220221102123 - 2⁵ = 220221102091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220221102096 and 220221102105.

It is not an unprimeable number, because it can be changed into a prime (220221102163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30056548 + ... + 30063873.

It is an arithmetic number, because the mean of its divisors is an integer number (14849744234).

Almost surely, 2^220221102123 is an apocalyptic number.

220221102123 is a deficient number, since it is larger than the sum of its proper divisors (136172759493).

220221102123 is a wasteful number, since it uses less digits than its factorization.

220221102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60120475 (or 60120472 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 220221102123 its reverse (321201122022), we get a palindrome (541422224145).

The spelling of 220221102123 in words is "two hundred twenty billion, two hundred twenty-one million, one hundred two thousand, one hundred twenty-three".