211223323122101 has 4 divisors (see below), whose sum is σ = 212622153076704. Its totient is φ = 209824493167500.

The previous prime is 211223323122029. The next prime is 211223323122107. The reversal of 211223323122101 is 101221323322112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211223323122101 - 2¹⁸ = 211223322859957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211223323122107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699414977075 + ... + 699414977376.

It is an arithmetic number, because the mean of its divisors is an integer number (53155538269176).

Almost surely, 2^{211223323122101} is an apocalyptic number.

It is an amenable number.

211223323122101 is a deficient number, since it is larger than the sum of its proper divisors (1398829954603).

211223323122101 is a wasteful number, since it uses less digits than its factorization.

211223323122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398829954602.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 211223323122101 its reverse (101221323322112), we get a palindrome (312444646444213).

The spelling of 211223323122101 in words is "two hundred eleven trillion, two hundred twenty-three billion, three hundred twenty-three million, one hundred twenty-two thousand, one hundred one".