210221222121122 has 8 divisors (see below), whose sum is σ = 315808885881372. Its totient is φ = 104951593494000.

The previous prime is 210221222121107. The next prime is 210221222121203. The reversal of 210221222121122 is 221121222122012.

It can be written as a sum of positive squares in 2 ways, for example, as 210194352682561 + 26869438561 = 14498081^2 + 163919^2 .

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

It is a super-2 number, since 2×210221222121122² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79508781629 + ... + 79508784272.

Almost surely, 2^{210221222121122} is an apocalyptic number.

210221222121122 is a deficient number, since it is larger than the sum of its proper divisors (105587663760250).

210221222121122 is a wasteful number, since it uses less digits than its factorization.

210221222121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159017566564.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 210221222121122 its reverse (221121222122012), we get a palindrome (431342444243134).

The spelling of 210221222121122 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-two".