20101213220023 has 16 divisors (see below), whose sum is σ = 21818748026880. Its totient is φ = 18408159264096.

The previous prime is 20101213219957. The next prime is 20101213220059. The reversal of 20101213220023 is 32002231210102.

It is a cyclic number.

It is not a de Polignac number, because 20101213220023 - 2⁴¹ = 17902189964471 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 (20101213220323) 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, 45643986 + ... + 46082272.

It is an arithmetic number, because the mean of its divisors is an integer number (1363671751680).

Almost surely, 2^{20101213220023} is an apocalyptic number.

20101213220023 is a deficient number, since it is larger than the sum of its proper divisors (1717534806857).

20101213220023 is a wasteful number, since it uses less digits than its factorization.

20101213220023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466206.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20101213220023 its reverse (32002231210102), we get a palindrome (52103444430125).

The spelling of 20101213220023 in words is "twenty trillion, one hundred one billion, two hundred thirteen million, two hundred twenty thousand, twenty-three".