2100102122 has 4 divisors (see below), whose sum is σ = 3150153186. Its totient is φ = 1050051060.

The previous prime is 2100102119. The next prime is 2100102127. The reversal of 2100102122 is 2212010012.

It is a happy number.

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., 1112822881 + 987279241 = 33359^2 + 31421^2 .

It is not an unprimeable number, because it can be changed into a prime (2100102127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525025529 + ... + 525025532.

Almost surely, 2^2100102122 is an apocalyptic number.

2100102122 is a deficient number, since it is larger than the sum of its proper divisors (1050051064).

2100102122 is a wasteful number, since it uses less digits than its factorization.

2100102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050051063.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2100102122 is about 45826.8711783818. The cubic root of 2100102122 is about 1280.5999226360.

Adding to 2100102122 its reverse (2212010012), we get a palindrome (4312112134).

The spelling of 2100102122 in words is "two billion, one hundred million, one hundred two thousand, one hundred twenty-two".