21020101202002 has 16 divisors (see below), whose sum is σ = 36035441709120. Its totient is φ = 9008369174448.

The previous prime is 21020101201997. The next prime is 21020101202029. The reversal of 21020101202002 is 20020210102012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19936588 + ... + 20964439.

It is an arithmetic number, because the mean of its divisors is an integer number (2252215106820).

Almost surely, 2^{21020101202002} is an apocalyptic number.

21020101202002 is a deficient number, since it is larger than the sum of its proper divisors (15015340507118).

21020101202002 is a wasteful number, since it uses less digits than its factorization.

21020101202002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40937745.

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

Adding to 21020101202002 its reverse (20020210102012), we get a palindrome (41040311304014).

The spelling of 21020101202002 in words is "twenty-one trillion, twenty billion, one hundred one million, two hundred two thousand, two".