211121210202122 has 16 divisors (see below), whose sum is σ = 345488301579744. Its totient is φ = 95959400250000.

The previous prime is 211121210202029. The next prime is 211121210202151. The reversal of 211121210202122 is 221202012121112.

It is a junction number, because it is equal to n+sod(n) for n = 211121210202094 and 211121210202103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238859129 + ... + 239741372.

It is an arithmetic number, because the mean of its divisors is an integer number (21593018848734).

Almost surely, 2^{211121210202122} is an apocalyptic number.

211121210202122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211121210202122 is a deficient number, since it is larger than the sum of its proper divisors (134367091377622).

211121210202122 is a wasteful number, since it uses less digits than its factorization.

211121210202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478620565.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211121210202122 its reverse (221202012121112), we get a palindrome (432323222323234).

The spelling of 211121210202122 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred ten million, two hundred two thousand, one hundred twenty-two".