220202102121 has 8 divisors (see below), whose sum is σ = 298579121760. Its totient is φ = 144313241952.

The previous prime is 220202102089. The next prime is 220202102129. The reversal of 220202102121 is 121201202022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220202102121 - 2⁵ = 220202102089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220202102121.

It is not an unprimeable number, because it can be changed into a prime (220202102129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622039660 + ... + 622040013.

It is an arithmetic number, because the mean of its divisors is an integer number (37322390220).

Almost surely, 2^220202102121 is an apocalyptic number.

It is an amenable number.

220202102121 is a deficient number, since it is larger than the sum of its proper divisors (78377019639).

220202102121 is a wasteful number, since it uses less digits than its factorization.

220202102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244079735.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220202102121 its reverse (121201202022), we get a palindrome (341403304143).

Subtracting from 220202102121 its reverse (121201202022), we obtain a palindrome (99000900099).

The spelling of 220202102121 in words is "two hundred twenty billion, two hundred two million, one hundred two thousand, one hundred twenty-one".