1021220000019 has 24 divisors (see below), whose sum is σ = 1562511049632. Its totient is φ = 640500806400.

The previous prime is 1021219999993. The next prime is 1021220000111. The reversal of 1021220000019 is 9100000221201.

1021220000019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021220000019 - 2⁹ = 1021219999507 is a prime.

It is a super-2 number, since 2×1021220000019² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021219999956 and 1021220000010.

It is not an unprimeable number, because it can be changed into a prime (1021220000719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1006632 + ... + 1748069.

It is an arithmetic number, because the mean of its divisors is an integer number (65104627068).

Almost surely, 2^{1021220000019} is an apocalyptic number.

1021220000019 is a deficient number, since it is larger than the sum of its proper divisors (541291049613).

1021220000019 is a wasteful number, since it uses less digits than its factorization.

1021220000019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757147 (or 2757144 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 1021220000019 in words is "one trillion, twenty-one billion, two hundred twenty million, nineteen", and thus it is an aban number.