21211524141050 has 48 divisors (see below), whose sum is σ = 39998805004152. Its totient is φ = 8367354316800.

The previous prime is 21211524141013. The next prime is 21211524141061. The reversal of 21211524141050 is 5014142511212.

It can be written as a sum of positive squares in 12 ways, for example, as 8745759326329 + 12465764814721 = 2957323^2 + 3530689^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29712290 + ... + 30417810.

Almost surely, 2^{21211524141050} is an apocalyptic number.

21211524141050 is a deficient number, since it is larger than the sum of its proper divisors (18787280863102).

21211524141050 is a wasteful number, since it uses less digits than its factorization.

21211524141050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713843 (or 713838 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

Adding to 21211524141050 its reverse (5014142511212), we get a palindrome (26225666652262).

The spelling of 21211524141050 in words is "twenty-one trillion, two hundred eleven billion, five hundred twenty-four million, one hundred forty-one thousand, fifty".