21120200202010 has 128 divisors (see below), whose sum is σ = 48618569760768. Its totient is φ = 6425736480000.

The previous prime is 21120200201987. The next prime is 21120200202121. The reversal of 21120200202010 is 1020200202112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1780645 + ... + 6738775.

It is an arithmetic number, because the mean of its divisors is an integer number (379832576256).

Almost surely, 2^{21120200202010} is an apocalyptic number.

21120200202010 is an abundant number, since it is smaller than the sum of its proper divisors (27498369558758).

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

21120200202010 is a wasteful number, since it uses less digits than its factorization.

21120200202010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4958340.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21120200202010 its reverse (1020200202112), we get a palindrome (22140400404122).

The spelling of 21120200202010 in words is "twenty-one trillion, one hundred twenty billion, two hundred million, two hundred two thousand, ten".