211202210121123 has 16 divisors (see below), whose sum is σ = 303264998610336. Its totient is φ = 129970467997440.

The previous prime is 211202210121109. The next prime is 211202210121163. The reversal of 211202210121123 is 321121012202112.

It is not a de Polignac number, because 211202210121123 - 2²⁸ = 211201941685667 is a prime.

It is a super-2 number, since 2×211202210121123² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211202210121123.

It is not an unprimeable number, because it can be changed into a prime (211202210121103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56459113 + ... + 60083573.

It is an arithmetic number, because the mean of its divisors is an integer number (18954062413146).

Almost surely, 2^{211202210121123} is an apocalyptic number.

211202210121123 is a deficient number, since it is larger than the sum of its proper divisors (92062788489213).

211202210121123 is a wasteful number, since it uses less digits than its factorization.

211202210121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118614.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 211202210121123 its reverse (321121012202112), we get a palindrome (532323222323235).

The spelling of 211202210121123 in words is "two hundred eleven trillion, two hundred two billion, two hundred ten million, one hundred twenty-one thousand, one hundred twenty-three".