121230640287618 has 32 divisors (see below), whose sum is σ = 242644161236352. Its totient is φ = 40379735088000.

The previous prime is 121230640287611. The next prime is 121230640287787. The reversal of 121230640287618 is 816782046032121.

It is a super-3 number, since 3×121230640287618³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (121230640287611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299344830 + ... + 299749542.

It is an arithmetic number, because the mean of its divisors is an integer number (7582630038636).

Almost surely, 2^{121230640287618} is an apocalyptic number.

121230640287618 is an abundant number, since it is smaller than the sum of its proper divisors (121413520948734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121230640287618 is a wasteful number, since it uses less digits than its factorization.

121230640287618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442250.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 121230640287618 in words is "one hundred twenty-one trillion, two hundred thirty billion, six hundred forty million, two hundred eighty-seven thousand, six hundred eighteen".