220222012121 has 8 divisors (see below), whose sum is σ = 221051938944. Its totient is φ = 219392213040.

The previous prime is 220222012117. The next prime is 220222012133. The reversal of 220222012121 is 121210222022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 220222012121 - 2² = 220222012117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220222012121.

It is not an unprimeable number, because it can be changed into a prime (220222015121) 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, 4775651 + ... + 4821543.

It is an arithmetic number, because the mean of its divisors is an integer number (27631492368).

Almost surely, 2^220222012121 is an apocalyptic number.

It is an amenable number.

220222012121 is a deficient number, since it is larger than the sum of its proper divisors (829926823).

220222012121 is a wasteful number, since it uses less digits than its factorization.

220222012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63871.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220222012121 its reverse (121210222022), we get a palindrome (341432234143).

The spelling of 220222012121 in words is "two hundred twenty billion, two hundred twenty-two million, twelve thousand, one hundred twenty-one".