21122213311110 has 32 divisors (see below), whose sum is σ = 52063401461472. Its totient is φ = 5480358048000.

The previous prime is 21122213311051. The next prime is 21122213311187. The reversal of 21122213311110 is 1111331222112.

It is a super-3 number, since 3×21122213311110³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 9514509391 + ... + 9514511610.

It is an arithmetic number, because the mean of its divisors is an integer number (1626981295671).

Almost surely, 2^{21122213311110} is an apocalyptic number.

21122213311110 is an abundant number, since it is smaller than the sum of its proper divisors (30941188150362).

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

21122213311110 is a wasteful number, since it uses less digits than its factorization.

21122213311110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19029021048.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 21122213311110 its reverse (1111331222112), we get a palindrome (22233544533222).

The spelling of 21122213311110 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred thirteen million, three hundred eleven thousand, one hundred ten".