21020000120219 has 16 divisors (see below), whose sum is σ = 23428730011680. Its totient is φ = 18741598248960.

The previous prime is 21020000120213. The next prime is 21020000120263. The reversal of 21020000120219 is 91202100002012.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-21020000120219 is a prime.

It is a super-2 number, since 2×21020000120219² (a number of 27 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 21020000120219.

It is not an unprimeable number, because it can be changed into a prime (21020000120213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7648367 + ... + 10026839.

It is an arithmetic number, because the mean of its divisors is an integer number (1464295625730).

Almost surely, 2^{21020000120219} is an apocalyptic number.

21020000120219 is a deficient number, since it is larger than the sum of its proper divisors (2408729891461).

21020000120219 is a wasteful number, since it uses less digits than its factorization.

21020000120219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405870.

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

The spelling of 21020000120219 in words is "twenty-one trillion, twenty billion, one hundred twenty thousand, two hundred nineteen".