21110020220210 has 16 divisors (see below), whose sum is σ = 38005837353792. Its totient is φ = 8442274542000.

The previous prime is 21110020220203. The next prime is 21110020220279. The reversal of 21110020220210 is 1202202001112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216642116 + ... + 216739535.

It is an arithmetic number, because the mean of its divisors is an integer number (2375364834612).

Almost surely, 2^{21110020220210} is an apocalyptic number.

21110020220210 is a deficient number, since it is larger than the sum of its proper divisors (16895817133582).

21110020220210 is a wasteful number, since it uses less digits than its factorization.

21110020220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433386529.

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

Adding to 21110020220210 its reverse (1202202001112), we get a palindrome (22312222221322).

The spelling of 21110020220210 in words is "twenty-one trillion, one hundred ten billion, twenty million, two hundred twenty thousand, two hundred ten".