1021131331242 has 32 divisors (see below), whose sum is σ = 2227965531840. Its totient is φ = 309427816320.

The previous prime is 1021131331169. The next prime is 1021131331243. The reversal of 1021131331242 is 2421331311201.

1021131331242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1021131331243) 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, 4359958 + ... + 4588190.

It is an arithmetic number, because the mean of its divisors is an integer number (69623922870).

Almost surely, 2^{1021131331242} is an apocalyptic number.

1021131331242 is an abundant number, since it is smaller than the sum of its proper divisors (1206834200598).

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

1021131331242 is a wasteful number, since it uses less digits than its factorization.

1021131331242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296038.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1021131331242 its reverse (2421331311201), we get a palindrome (3442462642443).

The spelling of 1021131331242 in words is "one trillion, twenty-one billion, one hundred thirty-one million, three hundred thirty-one thousand, two hundred forty-two".