2121353694607 has 32 divisors (see below), whose sum is σ = 2607145856000. Its totient is φ = 1720579027104.

The previous prime is 2121353694589. The next prime is 2121353694611. The reversal of 2121353694607 is 7064963531212.

It is not a de Polignac number, because 2121353694607 - 2³⁹ = 1571597880719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121353694637) 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 31 ways as a sum of consecutive naturals, for example, 5368198 + ... + 5749804.

It is an arithmetic number, because the mean of its divisors is an integer number (81473308000).

Almost surely, 2^{2121353694607} is an apocalyptic number.

2121353694607 is a deficient number, since it is larger than the sum of its proper divisors (485792161393).

2121353694607 is an equidigital number, since it uses as much as digits as its factorization.

2121353694607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382500 (or 382486 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 2121353694607 in words is "two trillion, one hundred twenty-one billion, three hundred fifty-three million, six hundred ninety-four thousand, six hundred seven".