121010221000223 has 4 divisors (see below), whose sum is σ = 125182987241640. Its totient is φ = 116837454758808.

The previous prime is 121010221000211. The next prime is 121010221000243. The reversal of 121010221000223 is 322000122010121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121010221000223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010221000243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086383120665 + ... + 2086383120722.

It is an arithmetic number, because the mean of its divisors is an integer number (31295746810410).

Almost surely, 2^{121010221000223} is an apocalyptic number.

121010221000223 is a deficient number, since it is larger than the sum of its proper divisors (4172766241417).

121010221000223 is an equidigital number, since it uses as much as digits as its factorization.

121010221000223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172766241416.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121010221000223 its reverse (322000122010121), we get a palindrome (443010343010344).

The spelling of 121010221000223 in words is "one hundred twenty-one trillion, ten billion, two hundred twenty-one million, two hundred twenty-three", and thus it is an aban number.