223121113020012 has 96 divisors (see below), whose sum is σ = 531951252037632. Its totient is φ = 72771951355456.

The previous prime is 223121113019971. The next prime is 223121113020031. The reversal of 223121113020012 is 210020311121322.

It is a super-3 number, since 3×223121113020012³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411416653 + ... + 411958619.

It is an arithmetic number, because the mean of its divisors is an integer number (5541158875392).

Almost surely, 2^{223121113020012} is an apocalyptic number.

It is an amenable number.

223121113020012 is an abundant number, since it is smaller than the sum of its proper divisors (308830139017620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223121113020012 is a wasteful number, since it uses less digits than its factorization.

223121113020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546027 (or 546025 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 223121113020012 its reverse (210020311121322), we get a palindrome (433141424141334).

The spelling of 223121113020012 in words is "two hundred twenty-three trillion, one hundred twenty-one billion, one hundred thirteen million, twenty thousand, twelve".