211210102100122 has 4 divisors (see below), whose sum is σ = 316815153150186. Its totient is φ = 105605051050060.

The previous prime is 211210102100113. The next prime is 211210102100147. The reversal of 211210102100122 is 221001201012112.

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., 181074404919321 + 30135697180801 = 13456389^2 + 5489599^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211210102100096 and 211210102100105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52802525525029 + ... + 52802525525032.

Almost surely, 2^{211210102100122} is an apocalyptic number.

211210102100122 is a deficient number, since it is larger than the sum of its proper divisors (105605051050064).

211210102100122 is a wasteful number, since it uses less digits than its factorization.

211210102100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105605051050063.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211210102100122 its reverse (221001201012112), we get a palindrome (432211303112234).

The spelling of 211210102100122 in words is "two hundred eleven trillion, two hundred ten billion, one hundred two million, one hundred thousand, one hundred twenty-two".