1021021201219 has 8 divisors (see below), whose sum is σ = 1047457945008. Its totient is φ = 994897318560.

The previous prime is 1021021201199. The next prime is 1021021201231. The reversal of 1021021201219 is 9121021201201.

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 1021021201219 - 2⁹ = 1021021200707 is a prime.

It is a super-2 number, since 2×1021021201219² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021021201219.

It is not an unprimeable number, because it can be changed into a prime (1021021205219) 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, 78208672 + ... + 78221725.

It is an arithmetic number, because the mean of its divisors is an integer number (130932243126).

Almost surely, 2^{1021021201219} is an apocalyptic number.

1021021201219 is a deficient number, since it is larger than the sum of its proper divisors (26436743789).

1021021201219 is a wasteful number, since it uses less digits than its factorization.

1021021201219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156430565.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 1021021201219 in words is "one trillion, twenty-one billion, twenty-one million, two hundred one thousand, two hundred nineteen".