21222200020110 has 32 divisors (see below), whose sum is σ = 51157655747712. Its totient is φ = 5634322705440.

The previous prime is 21222200020079. The next prime is 21222200020111. The reversal of 21222200020110 is 1102000222212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21222200020110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222200020111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1558157656 + ... + 1558171275.

It is an arithmetic number, because the mean of its divisors is an integer number (1598676742116).

Almost surely, 2^{21222200020110} is an apocalyptic number.

21222200020110 is an abundant number, since it is smaller than the sum of its proper divisors (29935455727602).

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

21222200020110 is a wasteful number, since it uses less digits than its factorization.

21222200020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116329168.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21222200020110 its reverse (1102000222212), we get a palindrome (22324200242322).

The spelling of 21222200020110 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred million, twenty thousand, one hundred ten".