220010120122221 has 72 divisors (see below), whose sum is σ = 384132160897056. Its totient is φ = 120220198600320.

The previous prime is 220010120122159. The next prime is 220010120122229. The reversal of 220010120122221 is 122221021010022.

It is a happy number.

220010120122221 is a `hidden beast` number, since 2 + 200 + 1 + 0 + 120 + 122 + 221 = 666.

It is not a de Polignac number, because 220010120122221 - 2¹⁸ = 220010119860077 is a prime.

It is a super-2 number, since 2×220010120122221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220010120122194 and 220010120122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220010120122229) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 152185786 + ... + 153624651.

It is an arithmetic number, because the mean of its divisors is an integer number (5335168901348).

Almost surely, 2^{220010120122221} is an apocalyptic number.

It is an amenable number.

220010120122221 is a deficient number, since it is larger than the sum of its proper divisors (164122040774835).

220010120122221 is a wasteful number, since it uses less digits than its factorization.

220010120122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305810523 (or 305810507 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220010120122221 its reverse (122221021010022), we get a palindrome (342231141132243).

It can be divided in two parts, 2200101 and 20122221, that added together give a palindrome (22322322).

The spelling of 220010120122221 in words is "two hundred twenty trillion, ten billion, one hundred twenty million, one hundred twenty-two thousand, two hundred twenty-one".