211121021110 has 32 divisors (see below), whose sum is σ = 400220206560. Its totient is φ = 79963469568.

The previous prime is 211121021107. The next prime is 211121021123. The reversal of 211121021110 is 11120121112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99904 + ... + 657436.

It is an arithmetic number, because the mean of its divisors is an integer number (12506881455).

Almost surely, 2^211121021110 is an apocalyptic number.

211121021110 is a deficient number, since it is larger than the sum of its proper divisors (189099185450).

211121021110 is a wasteful number, since it uses less digits than its factorization.

211121021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559552.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211121021110 its reverse (11120121112), we get a palindrome (222241142222).

The spelling of 211121021110 in words is "two hundred eleven billion, one hundred twenty-one million, twenty-one thousand, one hundred ten".