1101003556420 has 24 divisors (see below), whose sum is σ = 2312482886784. Its totient is φ = 440329914336.

The previous prime is 1101003556361. The next prime is 1101003556423. The reversal of 1101003556420 is 246553001011.

It is not an unprimeable number, because it can be changed into a prime (1101003556423) 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, 4342924 + ... + 4589443.

It is an arithmetic number, because the mean of its divisors is an integer number (96353453616).

Almost surely, 2^{1101003556420} is an apocalyptic number.

1101003556420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101003556420 is an abundant number, since it is smaller than the sum of its proper divisors (1211479330364).

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

1101003556420 is a wasteful number, since it uses less digits than its factorization.

1101003556420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8938539 (or 8938537 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 1101003556420 its reverse (246553001011), we get a palindrome (1347556557431).

The spelling of 1101003556420 in words is "one trillion, one hundred one billion, three million, five hundred fifty-six thousand, four hundred twenty".