13012221441 has 16 divisors (see below), whose sum is σ = 17525274624. Its totient is φ = 8587060944.

The previous prime is 13012221437. The next prime is 13012221463. The reversal of 13012221441 is 14412221031.

It is not a de Polignac number, because 13012221441 - 2² = 13012221437 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13012221841) 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, 897250 + ... + 911636.

It is an arithmetic number, because the mean of its divisors is an integer number (1095329664).

Almost surely, 2^13012221441 is an apocalyptic number.

It is an amenable number.

13012221441 is a deficient number, since it is larger than the sum of its proper divisors (4513053183).

13012221441 is a wasteful number, since it uses less digits than its factorization.

13012221441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17420.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 13012221441 its reverse (14412221031), we get a palindrome (27424442472).

The spelling of 13012221441 in words is "thirteen billion, twelve million, two hundred twenty-one thousand, four hundred forty-one".