1020201202019 has 4 divisors (see below), whose sum is σ = 1020243416400. Its totient is φ = 1020158987640.

The previous prime is 1020201201979. The next prime is 1020201202073. The reversal of 1020201202019 is 9102021020201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020201202019 - 2²⁸ = 1019932766563 is a prime.

It is a super-2 number, since 2×1020201202019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020281202019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21070919 + ... + 21119280.

It is an arithmetic number, because the mean of its divisors is an integer number (255060854100).

Almost surely, 2^{1020201202019} is an apocalyptic number.

1020201202019 is a deficient number, since it is larger than the sum of its proper divisors (42214381).

1020201202019 is an equidigital number, since it uses as much as digits as its factorization.

1020201202019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42214380.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 1020201202019 in words is "one trillion, twenty billion, two hundred one million, two hundred two thousand, nineteen".