102102122121 has 8 divisors (see below), whose sum is σ = 136923077760. Its totient is φ = 67674623952.

The previous prime is 102102122033. The next prime is 102102122147. The reversal of 102102122121 is 121221201201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102102122121 - 2⁷ = 102102121993 is a prime.

It is a super-2 number, since 2×102102122121² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102102122121.

It is not an unprimeable number, because it can be changed into a prime (102102122191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98363761 + ... + 98364798.

It is an arithmetic number, because the mean of its divisors is an integer number (17115384720).

Almost surely, 2^102102122121 is an apocalyptic number.

It is an amenable number.

102102122121 is a deficient number, since it is larger than the sum of its proper divisors (34820955639).

102102122121 is a wasteful number, since it uses less digits than its factorization.

102102122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196728735.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102102122121 its reverse (121221201201), we get a palindrome (223323323322).

The spelling of 102102122121 in words is "one hundred two billion, one hundred two million, one hundred twenty-two thousand, one hundred twenty-one".