21214036421241 has 16 divisors (see below), whose sum is σ = 28586530430976. Its totient is φ = 13992894842256.

The previous prime is 21214036421203. The next prime is 21214036421317. The reversal of 21214036421241 is 14212463041212.

It is not a de Polignac number, because 21214036421241 - 2⁷ = 21214036421113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21214036221241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97161105 + ... + 97379198.

It is an arithmetic number, because the mean of its divisors is an integer number (1786658151936).

Almost surely, 2^{21214036421241} is an apocalyptic number.

It is an amenable number.

21214036421241 is a deficient number, since it is larger than the sum of its proper divisors (7372494009735).

21214036421241 is a wasteful number, since it uses less digits than its factorization.

21214036421241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194540692.

The product of its (nonzero) digits is 18432, while the sum is 33.

Adding to 21214036421241 its reverse (14212463041212), we get a palindrome (35426499462453).

The spelling of 21214036421241 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, four hundred twenty-one thousand, two hundred forty-one".