19011201120021 has 8 divisors (see below), whose sum is σ = 27652656174624. Its totient is φ = 11521940072720.

The previous prime is 19011201120017. The next prime is 19011201120049. The reversal of 19011201120021 is 12002110211091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19011201120021 - 2² = 19011201120017 is a prime.

It is a super-2 number, since 2×19011201120021² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19011201120021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19011201120071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288048501786 + ... + 288048501851.

It is an arithmetic number, because the mean of its divisors is an integer number (3456582021828).

Almost surely, 2^{19011201120021} is an apocalyptic number.

19011201120021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19011201120021 is a deficient number, since it is larger than the sum of its proper divisors (8641455054603).

19011201120021 is a wasteful number, since it uses less digits than its factorization.

19011201120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576097003651.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 19011201120021 in words is "nineteen trillion, eleven billion, two hundred one million, one hundred twenty thousand, twenty-one".