23003211011220 has 576 divisors, whose sum is σ = 81523326044160. Its totient is φ = 5191690982400.

The previous prime is 23003211011219. The next prime is 23003211011237. The reversal of 23003211011220 is 2211011230032.

23003211011220 is a `hidden beast` number, since 2 + 300 + 32 + 110 + 1 + 1 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23003211011193 and 23003211011202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 507584002 + ... + 507629318.

It is an arithmetic number, because the mean of its divisors is an integer number (141533552160).

Almost surely, 2^{23003211011220} is an apocalyptic number.

23003211011220 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 23003211011220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40761663022080).

23003211011220 is an abundant number, since it is smaller than the sum of its proper divisors (58520115032940).

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

23003211011220 is a wasteful number, since it uses less digits than its factorization.

23003211011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45596 (or 45591 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23003211011220 its reverse (2211011230032), we get a palindrome (25214222241252).

The spelling of 23003211011220 in words is "twenty-three trillion, three billion, two hundred eleven million, eleven thousand, two hundred twenty".