221021102303122 has 64 divisors (see below), whose sum is σ = 377835620198400. Its totient is φ = 95984141489280.

The previous prime is 221021102303063. The next prime is 221021102303123. The reversal of 221021102303122 is 221303201120122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 221021102303093 and 221021102303102.

It is not an unprimeable number, because it can be changed into a prime (221021102303123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5730518254 + ... + 5730556822.

It is an arithmetic number, because the mean of its divisors is an integer number (5903681565600).

Almost surely, 2^{221021102303122} is an apocalyptic number.

221021102303122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221021102303122 is a deficient number, since it is larger than the sum of its proper divisors (156814517895278).

221021102303122 is a wasteful number, since it uses less digits than its factorization.

221021102303122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51511.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 221021102303122 its reverse (221303201120122), we get a palindrome (442324303423244).

The spelling of 221021102303122 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred two million, three hundred three thousand, one hundred twenty-two".