2121345314542 has 16 divisors (see below), whose sum is σ = 3201903433872. Its totient is φ = 1054064410560.

The previous prime is 2121345314521. The next prime is 2121345314593. The reversal of 2121345314542 is 2454135431212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4850208 + ... + 5269459.

It is an arithmetic number, because the mean of its divisors is an integer number (200118964617).

Almost surely, 2^{2121345314542} is an apocalyptic number.

2121345314542 is a deficient number, since it is larger than the sum of its proper divisors (1080558119330).

2121345314542 is a wasteful number, since it uses less digits than its factorization.

2121345314542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10120323.

The product of its digits is 115200, while the sum is 37.

The spelling of 2121345314542 in words is "two trillion, one hundred twenty-one billion, three hundred forty-five million, three hundred fourteen thousand, five hundred forty-two".