102120210100102 has 4 divisors (see below), whose sum is σ = 153180315150156. Its totient is φ = 51060105050050.

The previous prime is 102120210100093. The next prime is 102120210100109. The reversal of 102120210100102 is 201001012021201.

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 (102120210100109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25530052525024 + ... + 25530052525027.

It is an arithmetic number, because the mean of its divisors is an integer number (38295078787539).

Almost surely, 2^{102120210100102} is an apocalyptic number.

102120210100102 is a deficient number, since it is larger than the sum of its proper divisors (51060105050054).

102120210100102 is an equidigital number, since it uses as much as digits as its factorization.

102120210100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51060105050053.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102120210100102 its reverse (201001012021201), we get a palindrome (303121222121303).

The spelling of 102120210100102 in words is "one hundred two trillion, one hundred twenty billion, two hundred ten million, one hundred thousand, one hundred two".