203011013331220 has 24 divisors (see below), whose sum is σ = 436237619346144. Its totient is φ = 79315930789536.

The previous prime is 203011013331209. The next prime is 203011013331223. The reversal of 203011013331220 is 22133310110302.

It is a super-2 number, since 2×203011013331220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203011013331191 and 203011013331200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203011013331223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118029658054 + ... + 118029659773.

It is an arithmetic number, because the mean of its divisors is an integer number (18176567472756).

Almost surely, 2^{203011013331220} is an apocalyptic number.

203011013331220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203011013331220 is an abundant number, since it is smaller than the sum of its proper divisors (233226606014924).

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

203011013331220 is a wasteful number, since it uses less digits than its factorization.

203011013331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236059317879 (or 236059317877 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 203011013331220 its reverse (22133310110302), we get a palindrome (225144323441522).

The spelling of 203011013331220 in words is "two hundred three trillion, eleven billion, thirteen million, three hundred thirty-one thousand, two hundred twenty".