21120101111010 has 32 divisors (see below), whose sum is σ = 55296264727872. Its totient is φ = 5120024511680.

The previous prime is 21120101111003. The next prime is 21120101111027. The reversal of 21120101111010 is 1011110102112.

It is a Curzon number.

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, 32000152869 + ... + 32000153528.

It is an arithmetic number, because the mean of its divisors is an integer number (1728008272746).

Almost surely, 2^{21120101111010} is an apocalyptic number.

21120101111010 is an abundant number, since it is smaller than the sum of its proper divisors (34176163616862).

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

21120101111010 is a wasteful number, since it uses less digits than its factorization.

21120101111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64000306418.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 21120101111010 its reverse (1011110102112), we get a palindrome (22131211213122).

The spelling of 21120101111010 in words is "twenty-one trillion, one hundred twenty billion, one hundred one million, one hundred eleven thousand, ten".