1011421223044 has 24 divisors (see below), whose sum is σ = 1791442336320. Its totient is φ = 499581440544.

The previous prime is 1011421223041. The next prime is 1011421223051. The reversal of 1011421223044 is 4403221241101.

It is not an unprimeable number, because it can be changed into a prime (1011421223041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4796782 + ... + 5003194.

It is an arithmetic number, because the mean of its divisors is an integer number (74643430680).

Almost surely, 2^{1011421223044} is an apocalyptic number.

It is an amenable number.

1011421223044 is a deficient number, since it is larger than the sum of its proper divisors (780021113276).

1011421223044 is a wasteful number, since it uses less digits than its factorization.

1011421223044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221259 (or 221257 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1011421223044 its reverse (4403221241101), we get a palindrome (5414642464145).

The spelling of 1011421223044 in words is "one trillion, eleven billion, four hundred twenty-one million, two hundred twenty-three thousand, forty-four".