102121001302123 has 4 divisors (see below), whose sum is σ = 107495790844360. Its totient is φ = 96746211759888.

The previous prime is 102121001302069. The next prime is 102121001302157. The reversal of 102121001302123 is 321203100121201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102121001302123 - 2¹⁷ = 102121001171051 is a prime.

It is a super-3 number, since 3×102121001302123³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 5374789542217 = 102121001302123 / (1 + 0 + 2 + 1 + 2 + 1 + 0 + 0 + 1 + 3 + 0 + 2 + 1 + 2 + 3).

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 102121001302123.

It is not an unprimeable number, because it can be changed into a prime (102121001302223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2687394771090 + ... + 2687394771127.

It is an arithmetic number, because the mean of its divisors is an integer number (26873947711090).

Almost surely, 2^{102121001302123} is an apocalyptic number.

102121001302123 is a deficient number, since it is larger than the sum of its proper divisors (5374789542237).

102121001302123 is an equidigital number, since it uses as much as digits as its factorization.

102121001302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374789542236.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 102121001302123 its reverse (321203100121201), we get a palindrome (423324101423324).

The spelling of 102121001302123 in words is "one hundred two trillion, one hundred twenty-one billion, one million, three hundred two thousand, one hundred twenty-three".