21010220022110 has 96 divisors (see below), whose sum is σ = 42740020058112. Its totient is φ = 7374575295360.

The previous prime is 21010220022107. The next prime is 21010220022133. The reversal of 21010220022110 is 1122002201012.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 353636027 + ... + 353695433.

It is an arithmetic number, because the mean of its divisors is an integer number (445208542272).

Almost surely, 2^{21010220022110} is an apocalyptic number.

21010220022110 is an abundant number, since it is smaller than the sum of its proper divisors (21729800036002).

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

21010220022110 is a wasteful number, since it uses less digits than its factorization.

21010220022110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63306 (or 63277 counting only the distinct ones).

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

Adding to 21010220022110 its reverse (1122002201012), we get a palindrome (22132222223122).

The spelling of 21010220022110 in words is "twenty-one trillion, ten billion, two hundred twenty million, twenty-two thousand, one hundred ten".