211233121004 has 24 divisors (see below), whose sum is σ = 371250602688. Its totient is φ = 105162097680.

The previous prime is 211233120979. The next prime is 211233121007. The reversal of 211233121004 is 400121332112.

It is not an unprimeable number, because it can be changed into a prime (211233121007) 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, 1408139 + ... + 1550909.

It is an arithmetic number, because the mean of its divisors is an integer number (15468775112).

Almost surely, 2^211233121004 is an apocalyptic number.

It is an amenable number.

211233121004 is a deficient number, since it is larger than the sum of its proper divisors (160017481684).

211233121004 is a wasteful number, since it uses less digits than its factorization.

211233121004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144365 (or 144363 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211233121004 its reverse (400121332112), we get a palindrome (611354453116).

The spelling of 211233121004 in words is "two hundred eleven billion, two hundred thirty-three million, one hundred twenty-one thousand, four".