102102100121 has 12 divisors (see below), whose sum is σ = 118810581120. Its totient is φ = 87487533000.

The previous prime is 102102100069. The next prime is 102102100129. The reversal of 102102100121 is 121001201201.

It is not a de Polignac number, because 102102100121 - 2⁶ = 102102100057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102102100129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187505 + ... + 489246.

It is an arithmetic number, because the mean of its divisors is an integer number (9900881760).

Almost surely, 2^102102100121 is an apocalyptic number.

It is an amenable number.

102102100121 is a deficient number, since it is larger than the sum of its proper divisors (16708480999).

102102100121 is an equidigital number, since it uses as much as digits as its factorization.

102102100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679844 (or 679837 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102102100121 its reverse (121001201201), we get a palindrome (223103301322).

The spelling of 102102100121 in words is "one hundred two billion, one hundred two million, one hundred thousand, one hundred twenty-one".