1212020021211 has 8 divisors (see below), whose sum is σ = 1646517764880. Its totient is φ = 792767812512.

The previous prime is 1212020021183. The next prime is 1212020021231. The reversal of 1212020021211 is 1121200202121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1212020021211 - 2²³ = 1212011632603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212020021231) 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, 3811383556 + ... + 3811383873.

It is an arithmetic number, because the mean of its divisors is an integer number (205814720610).

Almost surely, 2^{1212020021211} is an apocalyptic number.

1212020021211 is a deficient number, since it is larger than the sum of its proper divisors (434497743669).

1212020021211 is an equidigital number, since it uses as much as digits as its factorization.

1212020021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7622767485.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212020021211 its reverse (1121200202121), we get a palindrome (2333220223332).

The spelling of 1212020021211 in words is "one trillion, two hundred twelve billion, twenty million, twenty-one thousand, two hundred eleven".