211010220210122 has 4 divisors (see below), whose sum is σ = 316515330315186. Its totient is φ = 105505110105060.

The previous prime is 211010220210103. The next prime is 211010220210157. The reversal of 211010220210122 is 221012022010112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 116336911549681 + 94673308660441 = 10785959^2 + 9730021^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211010220210122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52752555052529 + ... + 52752555052532.

Almost surely, 2^{211010220210122} is an apocalyptic number.

211010220210122 is a deficient number, since it is larger than the sum of its proper divisors (105505110105064).

211010220210122 is a wasteful number, since it uses less digits than its factorization.

211010220210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105505110105063.

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

Adding to 211010220210122 its reverse (221012022010112), we get a palindrome (432022242220234).

The spelling of 211010220210122 in words is "two hundred eleven trillion, ten billion, two hundred twenty million, two hundred ten thousand, one hundred twenty-two".