2002021002123 has 16 divisors (see below), whose sum is σ = 2675489711136. Its totient is φ = 1331617109760.

The previous prime is 2002021002097. The next prime is 2002021002161. The reversal of 2002021002123 is 3212001202002.

It is a happy number.

It is not a de Polignac number, because 2002021002123 - 2³⁶ = 1933301525387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2002021002193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13555665 + ... + 13702557.

It is an arithmetic number, because the mean of its divisors is an integer number (167218106946).

Almost surely, 2^{2002021002123} is an apocalyptic number.

2002021002123 is a deficient number, since it is larger than the sum of its proper divisors (673468709013).

2002021002123 is a wasteful number, since it uses less digits than its factorization.

2002021002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157294.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 2002021002123 its reverse (3212001202002), we get a palindrome (5214022204125).

The spelling of 2002021002123 in words is "two trillion, two billion, twenty-one million, two thousand, one hundred twenty-three".