203120024212100 has 72 divisors (see below), whose sum is σ = 440979747942888. Its totient is φ = 81209437388800.

The previous prime is 203120024212099. The next prime is 203120024212141. The reversal of 203120024212100 is 1212420021302.

It can be written as a sum of positive squares in 12 ways, for example, as 31112812228996 + 172007211983104 = 5577886^2 + 13115152^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 2466174920 + ... + 2466257280.

It is an arithmetic number, because the mean of its divisors is an integer number (6124718721429).

Almost surely, 2^{203120024212100} is an apocalyptic number.

203120024212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203120024212100 is an abundant number, since it is smaller than the sum of its proper divisors (237859723730788).

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

203120024212100 is a wasteful number, since it uses less digits than its factorization.

203120024212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93785 (or 93778 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 203120024212100 its reverse (1212420021302), we get a palindrome (204332444233402).

The spelling of 203120024212100 in words is "two hundred three trillion, one hundred twenty billion, twenty-four million, two hundred twelve thousand, one hundred".