10203400121 has 8 divisors (see below), whose sum is σ = 10758730080. Its totient is φ = 9649901088.

The previous prime is 10203400087. The next prime is 10203400169. The reversal of 10203400121 is 12100430201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10203400121 - 2¹⁰ = 10203399097 is a prime.

It is a super-3 number, since 3×10203400121³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10203400096 and 10203400105.

It is not an unprimeable number, because it can be changed into a prime (10203400021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446276 + ... + 468581.

It is an arithmetic number, because the mean of its divisors is an integer number (1344841260).

Almost surely, 2^10203400121 is an apocalyptic number.

It is an amenable number.

10203400121 is a deficient number, since it is larger than the sum of its proper divisors (555329959).

10203400121 is an equidigital number, since it uses as much as digits as its factorization.

10203400121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915463.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10203400121 its reverse (12100430201), we get a palindrome (22303830322).

The spelling of 10203400121 in words is "ten billion, two hundred three million, four hundred thousand, one hundred twenty-one".