203211002223220 has 24 divisors (see below), whose sum is σ = 426918214785384. Its totient is φ = 81251046581376.

The previous prime is 203211002223217. The next prime is 203211002223311. The reversal of 203211002223220 is 22322200112302.

It can be written as a sum of positive squares in 4 ways, for example, as 32807532461796 + 170403469761424 = 5727786^2 + 13053868^2 .

It is a super-2 number, since 2×203211002223220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203211002223191 and 203211002223200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2084594287 + ... + 2084691766.

It is an arithmetic number, because the mean of its divisors is an integer number (17788258949391).

Almost surely, 2^{203211002223220} is an apocalyptic number.

203211002223220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203211002223220 is an abundant number, since it is smaller than the sum of its proper divisors (223707212562164).

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

203211002223220 is a wasteful number, since it uses less digits than its factorization.

203211002223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169288499 (or 4169288497 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 203211002223220 its reverse (22322200112302), we get a palindrome (225533202335522).

The spelling of 203211002223220 in words is "two hundred three trillion, two hundred eleven billion, two million, two hundred twenty-three thousand, two hundred twenty".