2121185735432 has 64 divisors (see below), whose sum is σ = 4311161236800. Its totient is φ = 974527303680.

The previous prime is 2121185735423. The next prime is 2121185735441. The reversal of 2121185735432 is 2345375811212.

It is an interprime number because it is at equal distance from previous prime (2121185735423) and next prime (2121185735441).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12365207 + ... + 12535577.

It is an arithmetic number, because the mean of its divisors is an integer number (67361894325).

Almost surely, 2^{2121185735432} is an apocalyptic number.

It is an amenable number.

2121185735432 is an abundant number, since it is smaller than the sum of its proper divisors (2189975501368).

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

2121185735432 is a wasteful number, since it uses less digits than its factorization.

2121185735432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172566 (or 172562 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The spelling of 2121185735432 in words is "two trillion, one hundred twenty-one billion, one hundred eighty-five million, seven hundred thirty-five thousand, four hundred thirty-two".