21110210122010 has 8 divisors (see below), whose sum is σ = 37998378219636. Its totient is φ = 8444084048800.

The previous prime is 21110210122003. The next prime is 21110210122021. The reversal of 21110210122010 is 1022101201112.

It can be written as a sum of positive squares in 2 ways, for example, as 20814827654929 + 295382467081 = 4562327^2 + 543491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055510506091 + ... + 1055510506110.

Almost surely, 2^{21110210122010} is an apocalyptic number.

21110210122010 is a deficient number, since it is larger than the sum of its proper divisors (16888168097626).

21110210122010 is a wasteful number, since it uses less digits than its factorization.

21110210122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111021012208.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21110210122010 its reverse (1022101201112), we get a palindrome (22132311323122).

The spelling of 21110210122010 in words is "twenty-one trillion, one hundred ten billion, two hundred ten million, one hundred twenty-two thousand, ten".