21202220002210 has 192 divisors, whose sum is σ = 43502344973568. Its totient is φ = 7422438346752.

The previous prime is 21202220002133. The next prime is 21202220002213. The reversal of 21202220002210 is 1220002220212.

It is a super-2 number, since 2×21202220002210² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21202220002213) 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, 2055868014 + ... + 2055878326.

It is an arithmetic number, because the mean of its divisors is an integer number (226574713404).

Almost surely, 2^{21202220002210} is an apocalyptic number.

21202220002210 is an abundant number, since it is smaller than the sum of its proper divisors (22300124971358).

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

21202220002210 is a wasteful number, since it uses less digits than its factorization.

21202220002210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10829 (or 10816 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21202220002210 its reverse (1220002220212), we get a palindrome (22422222222422).

It can be divided in two parts, 21202220002 and 210, that added together give a palindrome (21202220212).

The spelling of 21202220002210 in words is "twenty-one trillion, two hundred two billion, two hundred twenty million, two thousand, two hundred ten".