11212013251 has 8 divisors (see below), whose sum is σ = 11840451840. Its totient is φ = 10595321352.

The previous prime is 11212013249. The next prime is 11212013287. The reversal of 11212013251 is 15231021211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11212013251 - 2¹ = 11212013249 is a prime.

It is a super-2 number, since 2×11212013251² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212013201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2934711 + ... + 2938528.

It is an arithmetic number, because the mean of its divisors is an integer number (1480056480).

Almost surely, 2^11212013251 is an apocalyptic number.

11212013251 is a deficient number, since it is larger than the sum of its proper divisors (628438589).

11212013251 is an equidigital number, since it uses as much as digits as its factorization.

11212013251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5873345.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 11212013251 its reverse (15231021211), we get a palindrome (26443034462).

The spelling of 11212013251 in words is "eleven billion, two hundred twelve million, thirteen thousand, two hundred fifty-one".