1213144343411 has 16 divisors (see below), whose sum is σ = 1628837161728. Its totient is φ = 872591335200.

The previous prime is 1213144343387. The next prime is 1213144343417. The reversal of 1213144343411 is 1143434413121.

It is a happy number.

It is not a de Polignac number, because 1213144343411 - 2⁶ = 1213144343347 is a prime.

It is a super-2 number, since 2×1213144343411² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213144343417) 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, 605965205 + ... + 605967206.

It is an arithmetic number, because the mean of its divisors is an integer number (101802322608).

Almost surely, 2^{1213144343411} is an apocalyptic number.

1213144343411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1213144343411 is a deficient number, since it is larger than the sum of its proper divisors (415692818317).

1213144343411 is a wasteful number, since it uses less digits than its factorization.

1213144343411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211932442.

The product of its digits is 13824, while the sum is 32.

Adding to 1213144343411 its reverse (1143434413121), we get a palindrome (2356578756532).

The spelling of 1213144343411 in words is "one trillion, two hundred thirteen billion, one hundred forty-four million, three hundred forty-three thousand, four hundred eleven".