2121171056150 has 24 divisors (see below), whose sum is σ = 3945704043600. Its totient is φ = 848398340960.

The previous prime is 2121171056143. The next prime is 2121171056161. The reversal of 2121171056150 is 516501711212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1138514 + ... + 2353413.

It is an arithmetic number, because the mean of its divisors is an integer number (164404335150).

Almost surely, 2^{2121171056150} is an apocalyptic number.

2121171056150 is a deficient number, since it is larger than the sum of its proper divisors (1824532987450).

2121171056150 is a wasteful number, since it uses less digits than its factorization.

2121171056150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3504088 (or 3504083 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 32.

Adding to 2121171056150 its reverse (516501711212), we get a palindrome (2637672767362).

The spelling of 2121171056150 in words is "two trillion, one hundred twenty-one billion, one hundred seventy-one million, fifty-six thousand, one hundred fifty".