2102001020102 has 4 divisors (see below), whose sum is σ = 3153001530156. Its totient is φ = 1051000510050.

The previous prime is 2102001020101. The next prime is 2102001020117. The reversal of 2102001020102 is 2010201002012.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102001020101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525500255024 + ... + 525500255027.

It is an arithmetic number, because the mean of its divisors is an integer number (788250382539).

Almost surely, 2^{2102001020102} is an apocalyptic number.

2102001020102 is a deficient number, since it is larger than the sum of its proper divisors (1051000510054).

2102001020102 is a wasteful number, since it uses less digits than its factorization.

2102001020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051000510053.

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

Adding to 2102001020102 its reverse (2010201002012), we get a palindrome (4112202022114).

The spelling of 2102001020102 in words is "two trillion, one hundred two billion, one million, twenty thousand, one hundred two".