102101100202 has 4 divisors (see below), whose sum is σ = 153151650306. Its totient is φ = 51050550100.

The previous prime is 102101100161. The next prime is 102101100229. The reversal of 102101100202 is 202001101201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 202001101201 = 307 ⋅657984043.

It can be written as a sum of positive squares in only one way, i.e., 90860647761 + 11240452441 = 301431^2 + 106021^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525275049 + ... + 25525275052.

Almost surely, 2^102101100202 is an apocalyptic number.

102101100202 is a deficient number, since it is larger than the sum of its proper divisors (51050550104).

102101100202 is an equidigital number, since it uses as much as digits as its factorization.

102101100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51050550103.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102101100202 its reverse (202001101201), we get a palindrome (304102201403).

Subtracting 102101100202 from its reverse (202001101201), we obtain a palindrome (99900000999).

The spelling of 102101100202 in words is "one hundred two billion, one hundred one million, one hundred thousand, two hundred two".