220220210222121 has 16 divisors (see below), whose sum is σ = 293674624303104. Its totient is φ = 146789635731984.

The previous prime is 220220210222119. The next prime is 220220210222143. The reversal of 220220210222121 is 121222012022022.

It is not a de Polignac number, because 220220210222121 - 2¹ = 220220210222119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220220210222321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1398793210 + ... + 1398950636.

It is an arithmetic number, because the mean of its divisors is an integer number (18354664018944).

Almost surely, 2^{220220210222121} is an apocalyptic number.

It is an amenable number.

220220210222121 is a deficient number, since it is larger than the sum of its proper divisors (73454414080983).

220220210222121 is a wasteful number, since it uses less digits than its factorization.

220220210222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230180.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 220220210222121 its reverse (121222012022022), we get a palindrome (341442222244143).

The spelling of 220220210222121 in words is "two hundred twenty trillion, two hundred twenty billion, two hundred ten million, two hundred twenty-two thousand, one hundred twenty-one".