121669444340 has 12 divisors (see below), whose sum is σ = 255505833156. Its totient is φ = 48667777728.

The previous prime is 121669444333. The next prime is 121669444423. The reversal of 121669444340 is 43444966121.

It can be written as a sum of positive squares in 2 ways, for example, as 46854065764 + 74815378576 = 216458^2 + 273524^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121669444291 and 121669444300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3041736089 + ... + 3041736128.

It is an arithmetic number, because the mean of its divisors is an integer number (21292152763).

Almost surely, 2^121669444340 is an apocalyptic number.

121669444340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121669444340 is an abundant number, since it is smaller than the sum of its proper divisors (133836388816).

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

121669444340 is a wasteful number, since it uses less digits than its factorization.

121669444340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6083472226 (or 6083472224 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 121669444340 in words is "one hundred twenty-one billion, six hundred sixty-nine million, four hundred forty-four thousand, three hundred forty".