1212001133021 has 8 divisors (see below), whose sum is σ = 1385633106624. Its totient is φ = 1038491398080.

The previous prime is 1212001133009. The next prime is 1212001133029. The reversal of 1212001133021 is 1203311002121.

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 1212001133021 - 2¹⁸ = 1212000870877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212001133029) 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, 30538415 + ... + 30578076.

It is an arithmetic number, because the mean of its divisors is an integer number (173204138328).

Almost surely, 2^{1212001133021} is an apocalyptic number.

It is an amenable number.

1212001133021 is a deficient number, since it is larger than the sum of its proper divisors (173631973603).

1212001133021 is an equidigital number, since it uses as much as digits as its factorization.

1212001133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61119331.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1212001133021 its reverse (1203311002121), we get a palindrome (2415312135142).

The spelling of 1212001133021 in words is "one trillion, two hundred twelve billion, one million, one hundred thirty-three thousand, twenty-one".