23012021010220 has 72 divisors (see below), whose sum is σ = 53151479312400. Its totient is φ = 8362706689920.

The previous prime is 23012021010217. The next prime is 23012021010299. The reversal of 23012021010220 is 2201012021032.

It is a happy number.

It is a super-2 number, since 2×23012021010220² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23012021010194 and 23012021010203.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 810066 + ... + 6832294.

It is an arithmetic number, because the mean of its divisors is an integer number (738214990450).

Almost surely, 2^{23012021010220} is an apocalyptic number.

23012021010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23012021010220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26575739656200).

23012021010220 is an abundant number, since it is smaller than the sum of its proper divisors (30139458302180).

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

23012021010220 is a wasteful number, since it uses less digits than its factorization.

23012021010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023839 (or 6023826 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 23012021010220 its reverse (2201012021032), we get a palindrome (25213033031252).

The spelling of 23012021010220 in words is "twenty-three trillion, twelve billion, twenty-one million, ten thousand, two hundred twenty".