210021100121222 has 8 divisors (see below), whose sum is σ = 339264854042016. Its totient is φ = 96932815440552.

The previous prime is 210021100121221. The next prime is 210021100121281. The reversal of 210021100121222 is 222121001120012.

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

It is a super-2 number, since 2×210021100121222² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210021100121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021100121221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4038867309998 + ... + 4038867310049.

It is an arithmetic number, because the mean of its divisors is an integer number (42408106755252).

Almost surely, 2^{210021100121222} is an apocalyptic number.

210021100121222 is a deficient number, since it is larger than the sum of its proper divisors (129243753920794).

210021100121222 is a wasteful number, since it uses less digits than its factorization.

210021100121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8077734620062.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210021100121222 its reverse (222121001120012), we get a palindrome (432142101241234).

The spelling of 210021100121222 in words is "two hundred ten trillion, twenty-one billion, one hundred million, one hundred twenty-one thousand, two hundred twenty-two".