21020211001010 has 32 divisors (see below), whose sum is σ = 42891442695360. Its totient is φ = 7352818746048.

The previous prime is 21020211000979. The next prime is 21020211001019. The reversal of 21020211001010 is 1010011202012.

It is a junction number, because it is equal to n+sod(n) for n = 21020211000982 and 21020211001000.

It is not an unprimeable number, because it can be changed into a prime (21020211001019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4255100972 + ... + 4255105911.

It is an arithmetic number, because the mean of its divisors is an integer number (1340357584230).

Almost surely, 2^{21020211001010} is an apocalyptic number.

21020211001010 is an abundant number, since it is smaller than the sum of its proper divisors (21871231694350).

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

21020211001010 is a wasteful number, since it uses less digits than its factorization.

21020211001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8510206922.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21020211001010 its reverse (1010011202012), we get a palindrome (22030222203022).

The spelling of 21020211001010 in words is "twenty-one trillion, twenty billion, two hundred eleven million, one thousand, ten".