211121111021210 has 32 divisors (see below), whose sum is σ = 411053017842432. Its totient is φ = 77609007524160.

The previous prime is 211121111021113. The next prime is 211121111021231. The reversal of 211121111021210 is 12120111121112.

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 15 ways as a sum of consecutive naturals, for example, 3577081826 + ... + 3577140845.

It is an arithmetic number, because the mean of its divisors is an integer number (12845406807576).

Almost surely, 2^{211121111021210} is an apocalyptic number.

211121111021210 is a deficient number, since it is larger than the sum of its proper divisors (199931906821222).

211121111021210 is a wasteful number, since it uses less digits than its factorization.

211121111021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7154222918.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211121111021210 its reverse (12120111121112), we get a palindrome (223241222142322).

The spelling of 211121111021210 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred eleven million, twenty-one thousand, two hundred ten".