1252212819401 has 4 divisors (see below), whose sum is σ = 1252216458192. Its totient is φ = 1252209180612.

The previous prime is 1252212819343. The next prime is 1252212819413. The reversal of 1252212819401 is 1049182122521.

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 a de Polignac number, because none of the positive numbers 2^k-1252212819401 is a prime.

It is a super-4 number, since 4×1252212819401⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252212819461) 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, 1242155 + ... + 2011808.

It is an arithmetic number, because the mean of its divisors is an integer number (313054114548).

Almost surely, 2^{1252212819401} is an apocalyptic number.

It is an amenable number.

1252212819401 is a deficient number, since it is larger than the sum of its proper divisors (3638791).

1252212819401 is an equidigital number, since it uses as much as digits as its factorization.

1252212819401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638790.

The product of its (nonzero) digits is 23040, while the sum is 38.

The spelling of 1252212819401 in words is "one trillion, two hundred fifty-two billion, two hundred twelve million, eight hundred nineteen thousand, four hundred one".