211223121104 has 40 divisors (see below), whose sum is σ = 410133729672. Its totient is φ = 105382379520.

The previous prime is 211223121097. The next prime is 211223121113. The reversal of 211223121104 is 401121322112.

211223121104 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 27473725504 + 183749395600 = 165752^2 + 428660^2 .

It is a super-3 number, since 3×211223121104³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18534032 + ... + 18545424.

Almost surely, 2^211223121104 is an apocalyptic number.

It is an amenable number.

211223121104 is a deficient number, since it is larger than the sum of its proper divisors (198910608568).

211223121104 is a wasteful number, since it uses less digits than its factorization.

211223121104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13815 (or 13809 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 211223121104 its reverse (401121322112), we get a palindrome (612344443216).

The spelling of 211223121104 in words is "two hundred eleven billion, two hundred twenty-three million, one hundred twenty-one thousand, one hundred four".