221121001200002 has 4 divisors (see below), whose sum is σ = 331681501800006. Its totient is φ = 110560500600000.

The previous prime is 221121001199983. The next prime is 221121001200017. The reversal of 221121001200002 is 200002100121122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 198286642682041 + 22834358517961 = 14081429^2 + 4778531^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221121001200002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55280250299999 + ... + 55280250300002.

Almost surely, 2^{221121001200002} is an apocalyptic number.

221121001200002 is a deficient number, since it is larger than the sum of its proper divisors (110560500600004).

221121001200002 is a wasteful number, since it uses less digits than its factorization.

221121001200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110560500600003.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221121001200002 its reverse (200002100121122), we get a palindrome (421123101321124).

The spelling of 221121001200002 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, one million, two hundred thousand, two".