20021210210202 has 16 divisors (see below), whose sum is σ = 40045833946272. Its totient is φ = 6673167815760.

The previous prime is 20021210210137. The next prime is 20021210210251. The reversal of 20021210210202 is 20201201212002.

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, 142153993 + ... + 142294764.

It is an arithmetic number, because the mean of its divisors is an integer number (2502864621642).

Almost surely, 2^{20021210210202} is an apocalyptic number.

20021210210202 is an abundant number, since it is smaller than the sum of its proper divisors (20024623736070).

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

20021210210202 is a wasteful number, since it uses less digits than its factorization.

20021210210202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284460493.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20021210210202 its reverse (20201201212002), we get a palindrome (40222411422204).

The spelling of 20021210210202 in words is "twenty trillion, twenty-one billion, two hundred ten million, two hundred ten thousand, two hundred two".