1002202110021 has 16 divisors (see below), whose sum is σ = 1579825987200. Its totient is φ = 552939094848.

The previous prime is 1002202110017. The next prime is 1002202110037. The reversal of 1002202110021 is 1200112022001.

It is not a de Polignac number, because 1002202110021 - 2² = 1002202110017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002202109979 and 1002202110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002202114021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 822825426 + ... + 822826643.

It is an arithmetic number, because the mean of its divisors is an integer number (98739124200).

Almost surely, 2^{1002202110021} is an apocalyptic number.

It is an amenable number.

1002202110021 is a deficient number, since it is larger than the sum of its proper divisors (577623877179).

1002202110021 is a wasteful number, since it uses less digits than its factorization.

1002202110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645652108.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1002202110021 its reverse (1200112022001), we get a palindrome (2202314132022).

The spelling of 1002202110021 in words is "one trillion, two billion, two hundred two million, one hundred ten thousand, twenty-one".