20012021000223 has 16 divisors (see below), whose sum is σ = 31069876271616. Its totient is φ = 11219677541280.

The previous prime is 20012021000221. The next prime is 20012021000239. The reversal of 20012021000223 is 32200012021002.

It is a happy number.

It is not a de Polignac number, because 20012021000223 - 2¹ = 20012021000221 is a prime.

It is a super-2 number, since 2×20012021000223² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012021000221) 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, 8990125123 + ... + 8990127348.

It is an arithmetic number, because the mean of its divisors is an integer number (1941867266976).

Almost surely, 2^{20012021000223} is an apocalyptic number.

20012021000223 is a deficient number, since it is larger than the sum of its proper divisors (11057855271393).

20012021000223 is a wasteful number, since it uses less digits than its factorization.

20012021000223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17980252534.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20012021000223 its reverse (32200012021002), we get a palindrome (52212033021225).

The spelling of 20012021000223 in words is "twenty trillion, twelve billion, twenty-one million, two hundred twenty-three", and thus it is an aban number.