20121132220223 has 16 divisors (see below), whose sum is σ = 20211927083040. Its totient is φ = 20030476576896.

The previous prime is 20121132220219. The next prime is 20121132220229. The reversal of 20121132220223 is 32202223112102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20121132220223 - 2² = 20121132220219 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 (20121132220229) 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, 2107582136 + ... + 2107591682.

It is an arithmetic number, because the mean of its divisors is an integer number (1263245442690).

Almost surely, 2^{20121132220223} is an apocalyptic number.

20121132220223 is a deficient number, since it is larger than the sum of its proper divisors (90794862817).

20121132220223 is a wasteful number, since it uses less digits than its factorization.

20121132220223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15866.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20121132220223 its reverse (32202223112102), we get a palindrome (52323355332325).

The spelling of 20121132220223 in words is "twenty trillion, one hundred twenty-one billion, one hundred thirty-two million, two hundred twenty thousand, two hundred twenty-three".