2002122123451 has 8 divisors (see below), whose sum is σ = 2035526254160. Its totient is φ = 1968821572608.

The previous prime is 2002122123401. The next prime is 2002122123467. The reversal of 2002122123451 is 1543212212002.

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

It is a cyclic number.

It is not a de Polignac number, because 2002122123451 - 2²¹ = 2002120026299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002122123401) 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, 25855986 + ... + 25933303.

It is an arithmetic number, because the mean of its divisors is an integer number (254440781770).

Almost surely, 2^{2002122123451} is an apocalyptic number.

2002122123451 is a deficient number, since it is larger than the sum of its proper divisors (33404130709).

2002122123451 is an equidigital number, since it uses as much as digits as its factorization.

2002122123451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51789933.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 2002122123451 its reverse (1543212212002), we get a palindrome (3545334335453).

The spelling of 2002122123451 in words is "two trillion, two billion, one hundred twenty-two million, one hundred twenty-three thousand, four hundred fifty-one".