210011012202221 has 8 divisors (see below), whose sum is σ = 211101269893560. Its totient is φ = 208920776343552.

The previous prime is 210011012202209. The next prime is 210011012202259. The reversal of 210011012202221 is 122202210110012.

It can be written as a sum of positive squares in 4 ways, for example, as 28610142834025 + 181400869368196 = 5348845^2 + 13468514^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210011012202221 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 210011012202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210011012202421) 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, 14009771 + ... + 24825303.

It is an arithmetic number, because the mean of its divisors is an integer number (26387658736695).

Almost surely, 2^{210011012202221} is an apocalyptic number.

It is an amenable number.

210011012202221 is a deficient number, since it is larger than the sum of its proper divisors (1090257691339).

210011012202221 is a wasteful number, since it uses less digits than its factorization.

210011012202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10916335.

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

Adding to 210011012202221 its reverse (122202210110012), we get a palindrome (332213222312233).

The spelling of 210011012202221 in words is "two hundred ten trillion, eleven billion, twelve million, two hundred two thousand, two hundred twenty-one".