1021221002019 has 8 divisors (see below), whose sum is σ = 1408580692560. Its totient is φ = 657337656416.

The previous prime is 1021221002017. The next prime is 1021221002027. The reversal of 1021221002019 is 9102001221201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021221002019 - 2¹ = 1021221002017 is a prime.

It is a super-2 number, since 2×1021221002019² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021221001986 and 1021221002004.

It is not an unprimeable number, because it can be changed into a prime (1021221002017) 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, 5869086132 + ... + 5869086305.

It is an arithmetic number, because the mean of its divisors is an integer number (176072586570).

Almost surely, 2^{1021221002019} is an apocalyptic number.

1021221002019 is a deficient number, since it is larger than the sum of its proper divisors (387359690541).

1021221002019 is a wasteful number, since it uses less digits than its factorization.

1021221002019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11738172469.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 1021221002019 in words is "one trillion, twenty-one billion, two hundred twenty-one million, two thousand, nineteen".