1021304323011 has 64 divisors (see below), whose sum is σ = 1714632634368. Its totient is φ = 527442659328.

The previous prime is 1021304323003. The next prime is 1021304323027. The reversal of 1021304323011 is 1103234031201.

It is not a de Polignac number, because 1021304323011 - 2³ = 1021304323003 is a prime.

It is a super-2 number, since 2×1021304323011² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1021304323001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 315061 + ... + 1463513.

It is an arithmetic number, because the mean of its divisors is an integer number (26791134912).

Almost surely, 2^{1021304323011} is an apocalyptic number.

1021304323011 is a deficient number, since it is larger than the sum of its proper divisors (693328311357).

1021304323011 is a wasteful number, since it uses less digits than its factorization.

1021304323011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148580.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1021304323011 its reverse (1103234031201), we get a palindrome (2124538354212).

The spelling of 1021304323011 in words is "one trillion, twenty-one billion, three hundred four million, three hundred twenty-three thousand, eleven".