21121112002210 has 64 divisors (see below), whose sum is σ = 42178619168640. Its totient is φ = 7549962488320.

The previous prime is 21121112002141. The next prime is 21121112002231. The reversal of 21121112002210 is 1220021112112.

21121112002210 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21121112002210² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341972652 + ... + 342034408.

It is an arithmetic number, because the mean of its divisors is an integer number (659040924510).

Almost surely, 2^{21121112002210} is an apocalyptic number.

21121112002210 is a deficient number, since it is larger than the sum of its proper divisors (21057507166430).

21121112002210 is a wasteful number, since it uses less digits than its factorization.

21121112002210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114531.

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

Adding to 21121112002210 its reverse (1220021112112), we get a palindrome (22341133114322).

The spelling of 21121112002210 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred twelve million, two thousand, two hundred ten".