21121112220010 has 16 divisors (see below), whose sum is σ = 41474183995872. Its totient is φ = 7680404443600.

The previous prime is 21121112219983. The next prime is 21121112220023. The reversal of 21121112220010 is 1002221112112.

It is a super-2 number, since 2×21121112220010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96005055436 + ... + 96005055655.

It is an arithmetic number, because the mean of its divisors is an integer number (2592136499742).

Almost surely, 2^{21121112220010} is an apocalyptic number.

21121112220010 is a deficient number, since it is larger than the sum of its proper divisors (20353071775862).

21121112220010 is a wasteful number, since it uses less digits than its factorization.

21121112220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192010111109.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21121112220010 its reverse (1002221112112), we get a palindrome (22123333332122).

The spelling of 21121112220010 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, ten".