1021020100219 has 8 divisors (see below), whose sum is σ = 1169587496448. Its totient is φ = 873129549480.

The previous prime is 1021020100213. The next prime is 1021020100237. The reversal of 1021020100219 is 9120010201201.

It is a happy number.

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 1021020100219 - 2³ = 1021020100211 is a prime.

It is a super-2 number, since 2×1021020100219² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021020100196 and 1021020100205.

It is not an unprimeable number, because it can be changed into a prime (1021020100211) 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, 169208137 + ... + 169214170.

It is an arithmetic number, because the mean of its divisors is an integer number (146198437056).

Almost surely, 2^{1021020100219} is an apocalyptic number.

1021020100219 is a deficient number, since it is larger than the sum of its proper divisors (148567396229).

1021020100219 is an equidigital number, since it uses as much as digits as its factorization.

1021020100219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338422745.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 1021020100219 in words is "one trillion, twenty-one billion, twenty million, one hundred thousand, two hundred nineteen".