221010121200010 has 8 divisors (see below), whose sum is σ = 397818218160036. Its totient is φ = 88404048480000.

The previous prime is 221010121199941. The next prime is 221010121200031. The reversal of 221010121200010 is 10002121010122.

It can be written as a sum of positive squares in 2 ways, for example, as 219398691524769 + 1611429675241 = 14812113^2 + 1269421^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11050506059991 + ... + 11050506060010.

Almost surely, 2^{221010121200010} is an apocalyptic number.

221010121200010 is a deficient number, since it is larger than the sum of its proper divisors (176808096960026).

221010121200010 is a wasteful number, since it uses less digits than its factorization.

221010121200010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22101012120008.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221010121200010 its reverse (10002121010122), we get a palindrome (231012242210132).

The spelling of 221010121200010 in words is "two hundred twenty-one trillion, ten billion, one hundred twenty-one million, two hundred thousand, ten".