1212012002021 has 8 divisors (see below), whose sum is σ = 1230310342464. Its totient is φ = 1193832097920.

The previous prime is 1212012001979. The next prime is 1212012002041. The reversal of 1212012002021 is 1202002102121.

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 1212012002021 - 2²⁶ = 1211944893157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1212012001987 and 1212012002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212012002041) 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, 29588465 + ... + 29629398.

It is an arithmetic number, because the mean of its divisors is an integer number (153788792808).

Almost surely, 2^{1212012002021} is an apocalyptic number.

It is an amenable number.

1212012002021 is a deficient number, since it is larger than the sum of its proper divisors (18298340443).

1212012002021 is an equidigital number, since it uses as much as digits as its factorization.

1212012002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59218171.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1212012002021 its reverse (1202002102121), we get a palindrome (2414014104142).

The spelling of 1212012002021 in words is "one trillion, two hundred twelve billion, twelve million, two thousand, twenty-one".