21001102022210 has 32 divisors (see below), whose sum is σ = 39445869428352. Its totient is φ = 8035138805760.

The previous prime is 21001102022191. The next prime is 21001102022269. The reversal of 21001102022210 is 1222020110012.

It is a super-2 number, since 2×21001102022210² (a number of 27 digits) contains 22 as substring.

It is a Curzon 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, 35387225 + ... + 35975795.

It is an arithmetic number, because the mean of its divisors is an integer number (1232683419636).

Almost surely, 2^{21001102022210} is an apocalyptic number.

21001102022210 is a deficient number, since it is larger than the sum of its proper divisors (18444767406142).

21001102022210 is a wasteful number, since it uses less digits than its factorization.

21001102022210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743738.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21001102022210 its reverse (1222020110012), we get a palindrome (22223122132222).

The spelling of 21001102022210 in words is "twenty-one trillion, one billion, one hundred two million, twenty-two thousand, two hundred ten".