221021002100010 has 64 divisors (see below), whose sum is σ = 606316152729600. Its totient is φ = 50511826327872.

The previous prime is 221021002100009. The next prime is 221021002100047. The reversal of 221021002100010 is 10001200120122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74158740 + ... + 77081519.

It is an arithmetic number, because the mean of its divisors is an integer number (9473689886400).

Almost surely, 2^{221021002100010} is an apocalyptic number.

221021002100010 is an abundant number, since it is smaller than the sum of its proper divisors (385295150629590).

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

221021002100010 is a wasteful number, since it uses less digits than its factorization.

221021002100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151247235.

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

Adding to 221021002100010 its reverse (10001200120122), we get a palindrome (231022202220132).

The spelling of 221021002100010 in words is "two hundred twenty-one trillion, twenty-one billion, two million, one hundred thousand, ten".