221121000202002 has 32 divisors (see below), whose sum is σ = 451022381618688. Its totient is φ = 72246295744896.

The previous prime is 221121000201973. The next prime is 221121000202009. The reversal of 221121000202002 is 200202000121122.

It is not an unprimeable number, because it can be changed into a prime (221121000202009) 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, 336239298 + ... + 336896285.

It is an arithmetic number, because the mean of its divisors is an integer number (14094449425584).

Almost surely, 2^{221121000202002} is an apocalyptic number.

221121000202002 is an abundant number, since it is smaller than the sum of its proper divisors (229901381416686).

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

221121000202002 is a wasteful number, since it uses less digits than its factorization.

221121000202002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673136674.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221121000202002 its reverse (200202000121122), we get a palindrome (421323000323124).

The spelling of 221121000202002 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred two thousand, two".