123240277221 has 8 divisors (see below), whose sum is σ = 164328077760. Its totient is φ = 82156330752.

The previous prime is 123240277217. The next prime is 123240277271. The reversal of 123240277221 is 122772042321.

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

It is not a de Polignac number, because 123240277221 - 2² = 123240277217 is a prime.

It is a super-3 number, since 3×123240277221³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123240277271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 888060 + ... + 1017413.

It is an arithmetic number, because the mean of its divisors is an integer number (20541009720).

Almost surely, 2^123240277221 is an apocalyptic number.

It is an amenable number.

123240277221 is a deficient number, since it is larger than the sum of its proper divisors (41087800539).

123240277221 is a wasteful number, since it uses less digits than its factorization.

123240277221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927035.

The product of its (nonzero) digits is 18816, while the sum is 33.

The spelling of 123240277221 in words is "one hundred twenty-three billion, two hundred forty million, two hundred seventy-seven thousand, two hundred twenty-one".