201000121223 has 16 divisors (see below), whose sum is σ = 221088022560. Its totient is φ = 181220966400.

The previous prime is 201000121219. The next prime is 201000121237. The reversal of 201000121223 is 322121000102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201000121223 - 2² = 201000121219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201000121198 and 201000121207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000121243) 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, 492143 + ... + 802623.

It is an arithmetic number, because the mean of its divisors is an integer number (13818001410).

Almost surely, 2^201000121223 is an apocalyptic number.

201000121223 is a deficient number, since it is larger than the sum of its proper divisors (20087901337).

201000121223 is a wasteful number, since it uses less digits than its factorization.

201000121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310978.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 201000121223 its reverse (322121000102), we get a palindrome (523121121325).

It can be divided in two parts, 201000 and 121223, that added together give a palindrome (322223).

The spelling of 201000121223 in words is "two hundred one billion, one hundred twenty-one thousand, two hundred twenty-three".