20200103121 has 48 divisors (see below), whose sum is σ = 30707780544. Its totient is φ = 11792880000.

The previous prime is 20200103107. The next prime is 20200103129. The reversal of 20200103121 is 12130100202.

It is not a de Polignac number, because 20200103121 - 2⁶ = 20200103057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200103097 and 20200103106.

It is not an unprimeable number, because it can be changed into a prime (20200103129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1349086 + ... + 1363976.

It is an arithmetic number, because the mean of its divisors is an integer number (639745428).

Almost surely, 2^20200103121 is an apocalyptic number.

It is an amenable number.

20200103121 is a deficient number, since it is larger than the sum of its proper divisors (10507677423).

20200103121 is a wasteful number, since it uses less digits than its factorization.

20200103121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15054 (or 15043 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20200103121 its reverse (12130100202), we get a palindrome (32330203323).

It can be divided in two parts, 20200 and 103121, that added together give a palindrome (123321).

The spelling of 20200103121 in words is "twenty billion, two hundred million, one hundred three thousand, one hundred twenty-one".