1021121305343 has 32 divisors (see below), whose sum is σ = 1116974876160. Its totient is φ = 930285336960.

The previous prime is 1021121305301. The next prime is 1021121305367. The reversal of 1021121305343 is 3435031211201.

It is not a de Polignac number, because 1021121305343 - 2¹⁰ = 1021121304319 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 (1021121302343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14523053 + ... + 14593193.

It is an arithmetic number, because the mean of its divisors is an integer number (34905464880).

Almost surely, 2^{1021121305343} is an apocalyptic number.

1021121305343 is a deficient number, since it is larger than the sum of its proper divisors (95853570817).

1021121305343 is a wasteful number, since it uses less digits than its factorization.

1021121305343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70479.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 1021121305343 its reverse (3435031211201), we get a palindrome (4456152516544).

The spelling of 1021121305343 in words is "one trillion, twenty-one billion, one hundred twenty-one million, three hundred five thousand, three hundred forty-three".