1011320221242 has 16 divisors (see below), whose sum is σ = 2025098095680. Its totient is φ = 336697131552.

The previous prime is 1011320221237. The next prime is 1011320221313. The reversal of 1011320221242 is 2421220231101.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102396867 + ... + 102406742.

It is an arithmetic number, because the mean of its divisors is an integer number (126568630980).

Almost surely, 2^{1011320221242} is an apocalyptic number.

1011320221242 is an abundant number, since it is smaller than the sum of its proper divisors (1013777874438).

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

1011320221242 is a wasteful number, since it uses less digits than its factorization.

1011320221242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204804437.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1011320221242 its reverse (2421220231101), we get a palindrome (3432540452343).

The spelling of 1011320221242 in words is "one trillion, eleven billion, three hundred twenty million, two hundred twenty-one thousand, two hundred forty-two".