1213385448105 has 24 divisors (see below), whose sum is σ = 2152113108288. Its totient is φ = 632089162656.

The previous prime is 1213385448101. The next prime is 1213385448113. The reversal of 1213385448105 is 5018445833121.

1213385448105 is a `hidden beast` number, since 1 + 21 + 3 + 3 + 8 + 544 + 81 + 0 + 5 = 666.

It is not a de Polignac number, because 1213385448105 - 2² = 1213385448101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1213385448101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313534357 + ... + 313538226.

It is an arithmetic number, because the mean of its divisors is an integer number (89671379512).

Almost surely, 2^{1213385448105} is an apocalyptic number.

1213385448105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1213385448105 is a deficient number, since it is larger than the sum of its proper divisors (938727660183).

1213385448105 is a wasteful number, since it uses less digits than its factorization.

1213385448105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627072637 (or 627072634 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 1213385448105 in words is "one trillion, two hundred thirteen billion, three hundred eighty-five million, four hundred forty-eight thousand, one hundred five".