203120021131133 has 16 divisors (see below), whose sum is σ = 212161336909056. Its totient is φ = 194096279351040.

The previous prime is 203120021131067. The next prime is 203120021131147. The reversal of 203120021131133 is 331131120021302.

It is a cyclic number.

It is not a de Polignac number, because 203120021131133 - 2³⁴ = 203102841261949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203120021131099 and 203120021131108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203126021131133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121785560 + ... + 123442142.

It is an arithmetic number, because the mean of its divisors is an integer number (13260083556816).

Almost surely, 2^{203120021131133} is an apocalyptic number.

203120021131133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

203120021131133 is a deficient number, since it is larger than the sum of its proper divisors (9041315777923).

203120021131133 is a wasteful number, since it uses less digits than its factorization.

203120021131133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661884.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 203120021131133 its reverse (331131120021302), we get a palindrome (534251141152435).

The spelling of 203120021131133 in words is "two hundred three trillion, one hundred twenty billion, twenty-one million, one hundred thirty-one thousand, one hundred thirty-three".