120212000021005 has 4 divisors (see below), whose sum is σ = 144254400025212. Its totient is φ = 96169600016800.

The previous prime is 120212000020999. The next prime is 120212000021093. The reversal of 120212000021005 is 500120000212021.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64374610577641 + 55837389443364 = 8023379^2 + 7472442^2 .

It is a de Polignac number, because none of the positive numbers 2^k-120212000021005 is a prime.

It is a super-2 number, since 2×120212000021005² (a number of 29 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 120212000021005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12021200002096 + ... + 12021200002105.

It is an arithmetic number, because the mean of its divisors is an integer number (36063600006303).

Almost surely, 2^{120212000021005} is an apocalyptic number.

It is an amenable number.

120212000021005 is a deficient number, since it is larger than the sum of its proper divisors (24042400004207).

120212000021005 is an equidigital number, since it uses as much as digits as its factorization.

120212000021005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24042400004206.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 120212000021005 its reverse (500120000212021), we get a palindrome (620332000233026).

The spelling of 120212000021005 in words is "one hundred twenty trillion, two hundred twelve billion, twenty-one thousand, five".