221002001010002 has 8 divisors (see below), whose sum is σ = 333334509811212. Its totient is φ = 109890497739600.

The previous prime is 221002001009989. The next prime is 221002001010013. The reversal of 221002001010002 is 200010100200122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 176061079977601 + 44940921032401 = 13268801^2 + 6703799^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305251382249 + ... + 305251382972.

Almost surely, 2^{221002001010002} is an apocalyptic number.

221002001010002 is a deficient number, since it is larger than the sum of its proper divisors (112332508801210).

221002001010002 is a wasteful number, since it uses less digits than its factorization.

221002001010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610502765404.

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

Adding to 221002001010002 its reverse (200010100200122), we get a palindrome (421012101210124).

The spelling of 221002001010002 in words is "two hundred twenty-one trillion, two billion, one million, ten thousand, two".