1212021120005 has 8 divisors (see below), whose sum is σ = 1517661228672. Its totient is φ = 927459639568.

The previous prime is 1212021119989. The next prime is 1212021120031. The reversal of 1212021120005 is 5000211202121.

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 1212021120005 - 2⁴ = 1212021119989 is a prime.

It is a super-2 number, since 2×1212021120005² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5269656929 + ... + 5269657158.

It is an arithmetic number, because the mean of its divisors is an integer number (189707653584).

Almost surely, 2^{1212021120005} is an apocalyptic number.

It is an amenable number.

1212021120005 is a deficient number, since it is larger than the sum of its proper divisors (305640108667).

1212021120005 is a wasteful number, since it uses less digits than its factorization.

1212021120005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10539314115.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 1212021120005 its reverse (5000211202121), we get a palindrome (6212232322126).

The spelling of 1212021120005 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred twenty thousand, five".