222010122121 has 8 divisors (see below), whose sum is σ = 224227351944. Its totient is φ = 219793267200.

The previous prime is 222010122101. The next prime is 222010122151. The reversal of 222010122121 is 121221010222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 207384606025 + 14625516096 = 455395^2 + 120936^2 .

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 222010122121 - 2²¹ = 222008024969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222010122095 and 222010122104.

It is not an unprimeable number, because it can be changed into a prime (222010122101) 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, 1182891 + ... + 1357663.

It is an arithmetic number, because the mean of its divisors is an integer number (28028418993).

Almost surely, 2^222010122121 is an apocalyptic number.

It is an amenable number.

222010122121 is a deficient number, since it is larger than the sum of its proper divisors (2217229823).

222010122121 is a wasteful number, since it uses less digits than its factorization.

222010122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187451.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222010122121 its reverse (121221010222), we get a palindrome (343231132343).

The spelling of 222010122121 in words is "two hundred twenty-two billion, ten million, one hundred twenty-two thousand, one hundred twenty-one".