21051214512350 has 24 divisors (see below), whose sum is σ = 42714827993448. Its totient is φ = 7654987095200.

The previous prime is 21051214512343. The next prime is 21051214512389. The reversal of 21051214512350 is 5321541215012.

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, 19137467189 + ... + 19137468288.

It is an arithmetic number, because the mean of its divisors is an integer number (1779784499727).

Almost surely, 2^{21051214512350} is an apocalyptic number.

21051214512350 is an abundant number, since it is smaller than the sum of its proper divisors (21663613481098).

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

21051214512350 is a wasteful number, since it uses less digits than its factorization.

21051214512350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38274935500 (or 38274935495 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 21051214512350 its reverse (5321541215012), we get a palindrome (26372755727362).

The spelling of 21051214512350 in words is "twenty-one trillion, fifty-one billion, two hundred fourteen million, five hundred twelve thousand, three hundred fifty".