10211221012013 has 4 divisors (see below), whose sum is σ = 11669966870880. Its totient is φ = 8752475153148.

The previous prime is 10211221012009. The next prime is 10211221012019. The reversal of 10211221012013 is 31021012211201.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 10211221012013 - 2² = 10211221012009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211221011982 and 10211221012000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211221012019) 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, 729372929423 + ... + 729372929436.

It is an arithmetic number, because the mean of its divisors is an integer number (2917491717720).

Almost surely, 2^{10211221012013} is an apocalyptic number.

It is an amenable number.

10211221012013 is a deficient number, since it is larger than the sum of its proper divisors (1458745858867).

10211221012013 is an equidigital number, since it uses as much as digits as its factorization.

10211221012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458745858866.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 10211221012013 its reverse (31021012211201), we get a palindrome (41232233223214).

The spelling of 10211221012013 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, twelve thousand, thirteen".