210001002222100 has 36 divisors (see below), whose sum is σ = 456265465695900. Its totient is φ = 83896568469760.

The previous prime is 210001002222047. The next prime is 210001002222107. The reversal of 210001002222100 is 1222200100012.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 17763830960656 + 192237171261444 = 4214716^2 + 13864962^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210001002222107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1297823935 + ... + 1297985734.

It is an arithmetic number, because the mean of its divisors is an integer number (12674040713775).

Almost surely, 2^{210001002222100} is an apocalyptic number.

210001002222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210001002222100 is an abundant number, since it is smaller than the sum of its proper divisors (246264463473800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210001002222100 is a wasteful number, since it uses less digits than its factorization.

210001002222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595810492 (or 2595810485 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210001002222100 its reverse (1222200100012), we get a palindrome (211223202322112).

The spelling of 210001002222100 in words is "two hundred ten trillion, one billion, two million, two hundred twenty-two thousand, one hundred".