1210203104121 has 48 divisors (see below), whose sum is σ = 1986609119040. Its totient is φ = 703438848000.

The previous prime is 1210203104101. The next prime is 1210203104171. The reversal of 1210203104121 is 1214013020121.

1210203104121 is a `hidden beast` number, since 1 + 210 + 20 + 310 + 4 + 121 = 666.

It is not a de Polignac number, because 1210203104121 - 2²¹ = 1210201006969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210203104094 and 1210203104103.

It is not an unprimeable number, because it can be changed into a prime (1210203104101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2287240 + ... + 2766201.

It is an arithmetic number, because the mean of its divisors is an integer number (41387689980).

Almost surely, 2^{1210203104121} is an apocalyptic number.

1210203104121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210203104121 is a deficient number, since it is larger than the sum of its proper divisors (776406014919).

1210203104121 is a wasteful number, since it uses less digits than its factorization.

1210203104121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053558 (or 5053555 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1210203104121 its reverse (1214013020121), we get a palindrome (2424216124242).

The spelling of 1210203104121 in words is "one trillion, two hundred ten billion, two hundred three million, one hundred four thousand, one hundred twenty-one".