121040205263 has 8 divisors (see below), whose sum is σ = 125885129280. Its totient is φ = 116278100640.

The previous prime is 121040205257. The next prime is 121040205269. The reversal of 121040205263 is 362502040121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121040205257) and next prime (121040205269).

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 121040205263 - 2¹² = 121040201167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121040205269) 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 7 ways as a sum of consecutive naturals, for example, 20701868 + ... + 20707713.

It is an arithmetic number, because the mean of its divisors is an integer number (15735641160).

Almost surely, 2^121040205263 is an apocalyptic number.

121040205263 is a deficient number, since it is larger than the sum of its proper divisors (4844924017).

121040205263 is an equidigital number, since it uses as much as digits as its factorization.

121040205263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41409697.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 121040205263 its reverse (362502040121), we get a palindrome (483542245384).

The spelling of 121040205263 in words is "one hundred twenty-one billion, forty million, two hundred five thousand, two hundred sixty-three".