102121210121101 has 4 divisors (see below), whose sum is σ = 102132168517600. Its totient is φ = 102110251724604.

The previous prime is 102121210121089. The next prime is 102121210121131. The reversal of 102121210121101 is 101121012121201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102121210121101 - 2⁵ = 102121210121069 is a prime.

It is a super-2 number, since 2×102121210121101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121210121131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5479184271 + ... + 5479202908.

It is an arithmetic number, because the mean of its divisors is an integer number (25533042129400).

Almost surely, 2^{102121210121101} is an apocalyptic number.

It is an amenable number.

102121210121101 is a deficient number, since it is larger than the sum of its proper divisors (10958396499).

102121210121101 is an equidigital number, since it uses as much as digits as its factorization.

102121210121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10958396498.

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

Adding to 102121210121101 its reverse (101121012121201), we get a palindrome (203242222242302).

The spelling of 102121210121101 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred ten million, one hundred twenty-one thousand, one hundred one".