121262166203 has 4 divisors (see below), whose sum is σ = 125443620240. Its totient is φ = 117080712168.

The previous prime is 121262166199. The next prime is 121262166209. The reversal of 121262166203 is 302661262121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302661262121 = 1523 ⋅198727027.

It is a cyclic number.

It is not a de Polignac number, because 121262166203 - 2² = 121262166199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121262166203.

It is not an unprimeable number, because it can be changed into a prime (121262166209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2090726975 + ... + 2090727032.

It is an arithmetic number, because the mean of its divisors is an integer number (31360905060).

Almost surely, 2^121262166203 is an apocalyptic number.

121262166203 is a deficient number, since it is larger than the sum of its proper divisors (4181454037).

121262166203 is an equidigital number, since it uses as much as digits as its factorization.

121262166203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4181454036.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 121262166203 in words is "one hundred twenty-one billion, two hundred sixty-two million, one hundred sixty-six thousand, two hundred three".