2121232456698 has 8 divisors (see below), whose sum is σ = 4242464913408. Its totient is φ = 707077485564.

The previous prime is 2121232456601. The next prime is 2121232456699. The reversal of 2121232456698 is 8966542321212.

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

2121232456698 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121232456698.

It is not an unprimeable number, because it can be changed into a prime (2121232456699) 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, 176769371386 + ... + 176769371397.

It is an arithmetic number, because the mean of its divisors is an integer number (530308114176).

Almost surely, 2^{2121232456698} is an apocalyptic number.

2121232456698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2121232456698 is a wasteful number, since it uses less digits than its factorization.

2121232456698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353538742788.

The product of its digits is 2488320, while the sum is 51.

The spelling of 2121232456698 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-two million, four hundred fifty-six thousand, six hundred ninety-eight".