21020210101202 has 24 divisors (see below), whose sum is σ = 34540999493196. Its totient is φ = 9537200891424.

The previous prime is 21020210101201. The next prime is 21020210101223. The reversal of 21020210101202 is 20210101202012.

It can be written as a sum of positive squares in 2 ways, for example, as 20585811791281 + 434398309921 = 4537159^2 + 659089^2 .

It is not an unprimeable number, because it can be changed into a prime (21020210101201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116035553 + ... + 116216564.

Almost surely, 2^{21020210101202} is an apocalyptic number.

21020210101202 is a deficient number, since it is larger than the sum of its proper divisors (13520789391994).

21020210101202 is a wasteful number, since it uses less digits than its factorization.

21020210101202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232252250 (or 232252191 counting only the distinct ones).

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

Adding to 21020210101202 its reverse (20210101202012), we get a palindrome (41230311303214).

The spelling of 21020210101202 in words is "twenty-one trillion, twenty billion, two hundred ten million, one hundred one thousand, two hundred two".