211011202121123 has 8 divisors (see below), whose sum is σ = 222117190349520. Its totient is φ = 199905227441280.

The previous prime is 211011202121051. The next prime is 211011202121149. The reversal of 211011202121123 is 321121202110112.

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

It is a cyclic number.

It is not a de Polignac number, because 211011202121123 - 2¹⁸ = 211011201858979 is a prime.

It is a super-2 number, since 2×211011202121123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211011202121095 and 211011202121104.

It is not an unprimeable number, because it can be changed into a prime (211011202121173) 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, 50852063 + ... + 54844823.

It is an arithmetic number, because the mean of its divisors is an integer number (27764648793690).

Almost surely, 2^{211011202121123} is an apocalyptic number.

211011202121123 is a deficient number, since it is larger than the sum of its proper divisors (11105988228397).

211011202121123 is a wasteful number, since it uses less digits than its factorization.

211011202121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774277.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 211011202121123 its reverse (321121202110112), we get a palindrome (532132404231235).

The spelling of 211011202121123 in words is "two hundred eleven trillion, eleven billion, two hundred two million, one hundred twenty-one thousand, one hundred twenty-three".