1212211220213 has 8 divisors (see below), whose sum is σ = 1385407300032. Its totient is φ = 1039020902496.

The previous prime is 1212211220197. The next prime is 1212211220251. The reversal of 1212211220213 is 3120221122121.

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 1212211220213 - 2⁴ = 1212211220197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212211220293) 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, 979895 + ... + 1839732.

It is an arithmetic number, because the mean of its divisors is an integer number (173175912504).

Almost surely, 2^{1212211220213} is an apocalyptic number.

It is an amenable number.

1212211220213 is a deficient number, since it is larger than the sum of its proper divisors (173196079819).

1212211220213 is an equidigital number, since it uses as much as digits as its factorization.

1212211220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881051.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1212211220213 its reverse (3120221122121), we get a palindrome (4332432342334).

The spelling of 1212211220213 in words is "one trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty thousand, two hundred thirteen".