1211020434343 has 8 divisors (see below), whose sum is σ = 1274772515120. Its totient is φ = 1147269769920.

The previous prime is 1211020434277. The next prime is 1211020434347. The reversal of 1211020434343 is 3434340201121.

It is a happy number.

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 1211020434343 - 2²⁹ = 1210483563431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211020434347) 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, 1709353 + ... + 2311693.

It is an arithmetic number, because the mean of its divisors is an integer number (159346564390).

Almost surely, 2^{1211020434343} is an apocalyptic number.

1211020434343 is a deficient number, since it is larger than the sum of its proper divisors (63752080777).

1211020434343 is a wasteful number, since it uses less digits than its factorization.

1211020434343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708177.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1211020434343 its reverse (3434340201121), we get a palindrome (4645360635464).

The spelling of 1211020434343 in words is "one trillion, two hundred eleven billion, twenty million, four hundred thirty-four thousand, three hundred forty-three".