211121222221010 has 32 divisors (see below), whose sum is σ = 400067819064000. Its totient is φ = 79994099344320.

The previous prime is 211121222220989. The next prime is 211121222221027. The reversal of 211121222221010 is 10122222121112.

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, 66018860 + ... + 69142839.

It is an arithmetic number, because the mean of its divisors is an integer number (12502119345750).

Almost surely, 2^{211121222221010} is an apocalyptic number.

211121222221010 is a deficient number, since it is larger than the sum of its proper divisors (188946596842990).

211121222221010 is a wasteful number, since it uses less digits than its factorization.

211121222221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135169946.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211121222221010 its reverse (10122222121112), we get a palindrome (221243444342122).

The spelling of 211121222221010 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, ten".