1021311210234 has 64 divisors (see below), whose sum is σ = 2397851456256. Its totient is φ = 283877167104.

The previous prime is 1021311210217. The next prime is 1021311210247. The reversal of 1021311210234 is 4320121131201.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1021311210234.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12192904 + ... + 12276380.

It is an arithmetic number, because the mean of its divisors is an integer number (37466429004).

Almost surely, 2^{1021311210234} is an apocalyptic number.

1021311210234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1021311210234 is an abundant number, since it is smaller than the sum of its proper divisors (1376540246022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021311210234 is a wasteful number, since it uses less digits than its factorization.

1021311210234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91399.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1021311210234 its reverse (4320121131201), we get a palindrome (5341432341435).

The spelling of 1021311210234 in words is "one trillion, twenty-one billion, three hundred eleven million, two hundred ten thousand, two hundred thirty-four".