220201021123 has 16 divisors (see below), whose sum is σ = 229506716160. Its totient is φ = 211113696096.

The previous prime is 220201021121. The next prime is 220201021129. The reversal of 220201021123 is 321120102022.

It is a happy number.

It is not a de Polignac number, because 220201021123 - 2¹ = 220201021121 is a prime.

It is a super-2 number, since 2×220201021123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220201021097 and 220201021106.

It is not an unprimeable number, because it can be changed into a prime (220201021121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 644461 + ... + 925057.

It is an arithmetic number, because the mean of its divisors is an integer number (14344169760).

Almost surely, 2^220201021123 is an apocalyptic number.

220201021123 is a deficient number, since it is larger than the sum of its proper divisors (9305695037).

220201021123 is a wasteful number, since it uses less digits than its factorization.

220201021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280986.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220201021123 its reverse (321120102022), we get a palindrome (541321123145).

The spelling of 220201021123 in words is "two hundred twenty billion, two hundred one million, twenty-one thousand, one hundred twenty-three".