102121120111121 has 8 divisors (see below), whose sum is σ = 103555262660640. Its totient is φ = 100687929537312.

The previous prime is 102121120111103. The next prime is 102121120111139. The reversal of 102121120111121 is 121111021121201.

It is an interprime number because it is at equal distance from previous prime (102121120111103) and next prime (102121120111139).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102121120111121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102121120111121.

It is not an unprimeable number, because it can be changed into a prime (102121120111321) 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, 237777875 + ... + 238206968.

It is an arithmetic number, because the mean of its divisors is an integer number (12944407832580).

Almost surely, 2^{102121120111121} is an apocalyptic number.

It is an amenable number.

102121120111121 is a deficient number, since it is larger than the sum of its proper divisors (1434142549519).

102121120111121 is an equidigital number, since it uses as much as digits as its factorization.

102121120111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475987855.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 102121120111121 its reverse (121111021121201), we get a palindrome (223232141232322).

The spelling of 102121120111121 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred twenty million, one hundred eleven thousand, one hundred twenty-one".