21210220110010 has 32 divisors (see below), whose sum is σ = 39431576604672. Its totient is φ = 8205903776640.

The previous prime is 21210220109963. The next prime is 21210220110059. The reversal of 21210220110010 is 1001102201212.

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, 18200659 + ... + 19330918.

It is an arithmetic number, because the mean of its divisors is an integer number (1232236768896).

Almost surely, 2^{21210220110010} is an apocalyptic number.

21210220110010 is a deficient number, since it is larger than the sum of its proper divisors (18221356494662).

21210220110010 is a wasteful number, since it uses less digits than its factorization.

21210220110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37533438.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21210220110010 its reverse (1001102201212), we get a palindrome (22211322311222).

The spelling of 21210220110010 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty million, one hundred ten thousand, ten".