102020200020202 has 4 divisors (see below), whose sum is σ = 153030300030306. Its totient is φ = 51010100010100.

The previous prime is 102020200020173. The next prime is 102020200020217. The reversal of 102020200020202 is 202020002020201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77602163205681 + 24418036814521 = 8809209^2 + 4941461^2 .

It is a super-2 number, since 2×102020200020202² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505050005049 + ... + 25505050005052.

Almost surely, 2^{102020200020202} is an apocalyptic number.

102020200020202 is a deficient number, since it is larger than the sum of its proper divisors (51010100010104).

102020200020202 is an equidigital number, since it uses as much as digits as its factorization.

102020200020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51010100010103.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 102020200020202 its reverse (202020002020201), we get a palindrome (304040202040403).

The spelling of 102020200020202 in words is "one hundred two trillion, twenty billion, two hundred million, twenty thousand, two hundred two".