203120032101 has 16 divisors (see below), whose sum is σ = 309531715584. Its totient is φ = 116062786224.

The previous prime is 203120032061. The next prime is 203120032139. The reversal of 203120032101 is 101230021302.

It is not a de Polignac number, because 203120032101 - 2¹¹ = 203120030053 is a prime.

It is a super-2 number, since 2×203120032101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203120032151) 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, 207600 + ... + 670326.

It is an arithmetic number, because the mean of its divisors is an integer number (19345732224).

Almost surely, 2^203120032101 is an apocalyptic number.

203120032101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

203120032101 is a deficient number, since it is larger than the sum of its proper divisors (106411683483).

203120032101 is a wasteful number, since it uses less digits than its factorization.

203120032101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483640.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 203120032101 its reverse (101230021302), we get a palindrome (304350053403).

The spelling of 203120032101 in words is "two hundred three billion, one hundred twenty million, thirty-two thousand, one hundred one".