202102100012002 has 4 divisors (see below), whose sum is σ = 303153150018006. Its totient is φ = 101051050006000.

The previous prime is 202102100011993. The next prime is 202102100012017. The reversal of 202102100012002 is 200210001201202.

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., 191839425073321 + 10262674938681 = 13850611^2 + 3203541^2 .

It is a super-2 number, since 2×202102100012002² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50525525002999 + ... + 50525525003002.

Almost surely, 2^{202102100012002} is an apocalyptic number.

202102100012002 is a deficient number, since it is larger than the sum of its proper divisors (101051050006004).

202102100012002 is a wasteful number, since it uses less digits than its factorization.

202102100012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101051050006003.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202102100012002 its reverse (200210001201202), we get a palindrome (402312101213204).

The spelling of 202102100012002 in words is "two hundred two trillion, one hundred two billion, one hundred million, twelve thousand, two".