2002201010021 has 4 divisors (see below), whose sum is σ = 2089253227872. Its totient is φ = 1915148792172.

The previous prime is 2002201009987. The next prime is 2002201010053. The reversal of 2002201010021 is 1200101022002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002201010021 is a prime.

It is a super-2 number, since 2×2002201010021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2002201009984 and 2002201010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002201016021) 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, 43526108891 + ... + 43526108936.

It is an arithmetic number, because the mean of its divisors is an integer number (522313306968).

Almost surely, 2^{2002201010021} is an apocalyptic number.

It is an amenable number.

2002201010021 is a deficient number, since it is larger than the sum of its proper divisors (87052217851).

2002201010021 is an equidigital number, since it uses as much as digits as its factorization.

2002201010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87052217850.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2002201010021 its reverse (1200101022002), we get a palindrome (3202302032023).

The spelling of 2002201010021 in words is "two trillion, two billion, two hundred one million, ten thousand, twenty-one".