2002021007 has 4 divisors (see below), whose sum is σ = 2288024016. Its totient is φ = 1716018000.

The previous prime is 2002021001. The next prime is 2002021019. The reversal of 2002021007 is 7001202002.

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 2002021007 - 2⁸ = 2002020751 is a prime.

It is a super-2 number, since 2×2002021007² = 8016176224938588098, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002020982 and 2002021000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002021001) 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, 143001494 + ... + 143001507.

It is an arithmetic number, because the mean of its divisors is an integer number (572006004).

Almost surely, 2^2002021007 is an apocalyptic number.

2002021007 is a deficient number, since it is larger than the sum of its proper divisors (286003009).

2002021007 is an equidigital number, since it uses as much as digits as its factorization.

2002021007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286003008.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 2002021007 is about 44743.9493898337. The cubic root of 2002021007 is about 1260.3452919045.

Adding to 2002021007 its reverse (7001202002), we get a palindrome (9003223009).

The spelling of 2002021007 in words is "two billion, two million, twenty-one thousand, seven".