1011421513104 has 160 divisors (see below), whose sum is σ = 2791002792960. Its totient is φ = 314682278400.

The previous prime is 1011421513027. The next prime is 1011421513117. The reversal of 1011421513104 is 4013151241101.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113117274 + ... + 113126214.

It is an arithmetic number, because the mean of its divisors is an integer number (17443767456).

Almost surely, 2^{1011421513104} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011421513104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395501396480).

1011421513104 is an abundant number, since it is smaller than the sum of its proper divisors (1779581279856).

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

1011421513104 is a wasteful number, since it uses less digits than its factorization.

1011421513104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10789 (or 10783 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 1011421513104 its reverse (4013151241101), we get a palindrome (5024572754205).

The spelling of 1011421513104 in words is "one trillion, eleven billion, four hundred twenty-one million, five hundred thirteen thousand, one hundred four".