211211123401330 has 128 divisors (see below), whose sum is σ = 444146573058048. Its totient is φ = 71607068762112.

The previous prime is 211211123401307. The next prime is 211211123401457. The reversal of 211211123401330 is 33104321112112.

It is a super-2 number, since 2×211211123401330² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211211123401295 and 211211123401304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29263039 + ... + 35759581.

It is an arithmetic number, because the mean of its divisors is an integer number (3469895102016).

Almost surely, 2^{211211123401330} is an apocalyptic number.

211211123401330 is an abundant number, since it is smaller than the sum of its proper divisors (232935449656718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211211123401330 is a wasteful number, since it uses less digits than its factorization.

211211123401330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6496940.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 211211123401330 its reverse (33104321112112), we get a palindrome (244315444513442).

The spelling of 211211123401330 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred twenty-three million, four hundred one thousand, three hundred thirty".