21202002001010 has 16 divisors (see below), whose sum is σ = 38278901503872. Its totient is φ = 8455179044400.

The previous prime is 21202002001009. The next prime is 21202002001013. The reversal of 21202002001010 is 1010020020212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21202002000982 and 21202002001000.

It is not an unprimeable number, because it can be changed into a prime (21202002001013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3202716026 + ... + 3202722645.

It is an arithmetic number, because the mean of its divisors is an integer number (2392431343992).

Almost surely, 2^{21202002001010} is an apocalyptic number.

21202002001010 is a deficient number, since it is larger than the sum of its proper divisors (17076899502862).

21202002001010 is a wasteful number, since it uses less digits than its factorization.

21202002001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6405439009.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21202002001010 its reverse (1010020020212), we get a palindrome (22212022021222).

The spelling of 21202002001010 in words is "twenty-one trillion, two hundred two billion, two million, one thousand, ten".