20111221102210 has 32 divisors (see below), whose sum is σ = 41384357688960. Its totient is φ = 6893158664832.

The previous prime is 20111221102207. The next prime is 20111221102229. The reversal of 20111221102210 is 1220112211102.

It is a super-2 number, since 2×20111221102210² (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 15 ways as a sum of consecutive naturals, for example, 43877500 + ... + 44333479.

It is an arithmetic number, because the mean of its divisors is an integer number (1293261177780).

Almost surely, 2^{20111221102210} is an apocalyptic number.

20111221102210 is an abundant number, since it is smaller than the sum of its proper divisors (21273136586750).

20111221102210 is a wasteful number, since it uses less digits than its factorization.

20111221102210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88214250.

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

Adding to 20111221102210 its reverse (1220112211102), we get a palindrome (21331333313312).

The spelling of 20111221102210 in words is "twenty trillion, one hundred eleven billion, two hundred twenty-one million, one hundred two thousand, two hundred ten".