20212221122210 has 64 divisors (see below), whose sum is σ = 39575131110144. Its totient is φ = 7387852320000.

The previous prime is 20212221122183. The next prime is 20212221122299. The reversal of 20212221122210 is 1222112221202.

It is a super-2 number, since 2×20212221122210² (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, 80637497 + ... + 80887763.

It is an arithmetic number, because the mean of its divisors is an integer number (618361423596).

Almost surely, 2^{20212221122210} is an apocalyptic number.

20212221122210 is a deficient number, since it is larger than the sum of its proper divisors (19362909987934).

20212221122210 is a wasteful number, since it uses less digits than its factorization.

20212221122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256539.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20212221122210 its reverse (1222112221202), we get a palindrome (21434333343412).

The spelling of 20212221122210 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred ten".