21222101110210 has 192 divisors, whose sum is σ = 54474887625984. Its totient is φ = 5840386675200.

The previous prime is 21222101110201. The next prime is 21222101110219. The reversal of 21222101110210 is 1201110122212.

It is an interprime number because it is at equal distance from previous prime (21222101110201) and next prime (21222101110219).

It is not an unprimeable number, because it can be changed into a prime (21222101110219) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4972521 + ... + 8195740.

It is an arithmetic number, because the mean of its divisors is an integer number (283723373052).

Almost surely, 2^{21222101110210} is an apocalyptic number.

21222101110210 is an abundant number, since it is smaller than the sum of its proper divisors (33252786515774).

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

21222101110210 is a wasteful number, since it uses less digits than its factorization.

21222101110210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13168329 (or 13168322 counting only the distinct ones).

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

Adding to 21222101110210 its reverse (1201110122212), we get a palindrome (22423211232422).

The spelling of 21222101110210 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred one million, one hundred ten thousand, two hundred ten".