221121021010002 has 32 divisors (see below), whose sum is σ = 454800744499200. Its totient is φ = 71631117225360.

The previous prime is 221121021009989. The next prime is 221121021010013. The reversal of 221121021010002 is 200010120121122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2153361274 + ... + 2153463957.

It is an arithmetic number, because the mean of its divisors is an integer number (14212523265600).

Almost surely, 2^{221121021010002} is an apocalyptic number.

221121021010002 is an abundant number, since it is smaller than the sum of its proper divisors (233679723489198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221121021010002 is a wasteful number, since it uses less digits than its factorization.

221121021010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306825478.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221121021010002 its reverse (200010120121122), we get a palindrome (421131141131124).

The spelling of 221121021010002 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, twenty-one million, ten thousand, two".