203213121120 has 72 divisors (see below), whose sum is σ = 693464780736. Its totient is φ = 54190165248.

The previous prime is 203213121103. The next prime is 203213121143. The reversal of 203213121120 is 21121312302.

203213121120 is a `hidden beast` number, since 2 + 0 + 321 + 312 + 11 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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 = 203213121093 and 203213121102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70558672 + ... + 70561551.

It is an arithmetic number, because the mean of its divisors is an integer number (9631455288).

Almost surely, 2^203213121120 is an apocalyptic number.

203213121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203213121120 is an abundant number, since it is smaller than the sum of its proper divisors (490251659616).

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

203213121120 is a wasteful number, since it uses less digits than its factorization.

203213121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141120244 (or 141120233 counting only the distinct ones).

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

Adding to 203213121120 its reverse (21121312302), we get a palindrome (224334433422).

The spelling of 203213121120 in words is "two hundred three billion, two hundred thirteen million, one hundred twenty-one thousand, one hundred twenty".