10221212011213 has 4 divisors (see below), whose sum is σ = 11681385155680. Its totient is φ = 8761038866748.

The previous prime is 10221212011187. The next prime is 10221212011237. The reversal of 10221212011213 is 31211021212201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10221212011213 - 2¹³ = 10221212003021 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 (10221212051213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730086572223 + ... + 730086572236.

It is an arithmetic number, because the mean of its divisors is an integer number (2920346288920).

Almost surely, 2^{10221212011213} is an apocalyptic number.

It is an amenable number.

10221212011213 is a deficient number, since it is larger than the sum of its proper divisors (1460173144467).

10221212011213 is an equidigital number, since it uses as much as digits as its factorization.

10221212011213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460173144466.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 10221212011213 its reverse (31211021212201), we get a palindrome (41432233223414).

The spelling of 10221212011213 in words is "ten trillion, two hundred twenty-one billion, two hundred twelve million, eleven thousand, two hundred thirteen".