1252421204201 has 4 divisors (see below), whose sum is σ = 1264580633472. Its totient is φ = 1240261774932.

The previous prime is 1252421204171. The next prime is 1252421204213. The reversal of 1252421204201 is 1024021242521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1252421204201 - 2⁶ = 1252421204137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252421204501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6079714481 + ... + 6079714686.

It is an arithmetic number, because the mean of its divisors is an integer number (316145158368).

Almost surely, 2^{1252421204201} is an apocalyptic number.

It is an amenable number.

1252421204201 is a deficient number, since it is larger than the sum of its proper divisors (12159429271).

1252421204201 is a wasteful number, since it uses less digits than its factorization.

1252421204201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12159429270.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 1252421204201 its reverse (1024021242521), we get a palindrome (2276442446722).

The spelling of 1252421204201 in words is "one trillion, two hundred fifty-two billion, four hundred twenty-one million, two hundred four thousand, two hundred one".