121021200223 has 8 divisors (see below), whose sum is σ = 150883574400. Its totient is φ = 94302233880.

The previous prime is 121021200221. The next prime is 121021200241. The reversal of 121021200223 is 322002120121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121021200223 - 2¹ = 121021200221 is a prime.

It is a super-2 number, since 2×121021200223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121021200197 and 121021200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021200221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785851873 + ... + 785852026.

It is an arithmetic number, because the mean of its divisors is an integer number (18860446800).

Almost surely, 2^121021200223 is an apocalyptic number.

121021200223 is a deficient number, since it is larger than the sum of its proper divisors (29862374177).

121021200223 is a wasteful number, since it uses less digits than its factorization.

121021200223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571703917.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 121021200223 its reverse (322002120121), we get a palindrome (443023320344).

The spelling of 121021200223 in words is "one hundred twenty-one billion, twenty-one million, two hundred thousand, two hundred twenty-three".