123121122002 has 16 divisors (see below), whose sum is σ = 189534945600. Its totient is φ = 59961952080.

The previous prime is 123121121993. The next prime is 123121122011. The reversal of 123121122002 is 200221121321.

It is an interprime number because it is at equal distance from previous prime (123121121993) and next prime (123121122011).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4773374 + ... + 4799097.

It is an arithmetic number, because the mean of its divisors is an integer number (11845934100).

Almost surely, 2^123121122002 is an apocalyptic number.

123121122002 is a deficient number, since it is larger than the sum of its proper divisors (66413823598).

123121122002 is a wasteful number, since it uses less digits than its factorization.

123121122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9572641.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 123121122002 its reverse (200221121321), we get a palindrome (323342243323).

The spelling of 123121122002 in words is "one hundred twenty-three billion, one hundred twenty-one million, one hundred twenty-two thousand, two".