1021142211142 has 4 divisors (see below), whose sum is σ = 1531713316716. Its totient is φ = 510571105570.

The previous prime is 1021142211127. The next prime is 1021142211151. The reversal of 1021142211142 is 2411122411201.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255285552784 + ... + 255285552787.

It is an arithmetic number, because the mean of its divisors is an integer number (382928329179).

Almost surely, 2^{1021142211142} is an apocalyptic number.

1021142211142 is a deficient number, since it is larger than the sum of its proper divisors (510571105574).

1021142211142 is an equidigital number, since it uses as much as digits as its factorization.

1021142211142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510571105573.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 1021142211142 its reverse (2411122411201), we get a palindrome (3432264622343).

The spelling of 1021142211142 in words is "one trillion, twenty-one billion, one hundred forty-two million, two hundred eleven thousand, one hundred forty-two".