10122000000221 has 4 divisors (see below), whose sum is σ = 10122728058432. Its totient is φ = 10121271942012.

The previous prime is 10122000000149. The next prime is 10122000000227. The reversal of 10122000000221 is 12200000022101.

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 10122000000221 - 2²² = 10121995805917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122000000227) 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, 364008251 + ... + 364036056.

It is an arithmetic number, because the mean of its divisors is an integer number (2530682014608).

Almost surely, 2^{10122000000221} is an apocalyptic number.

It is an amenable number.

10122000000221 is a deficient number, since it is larger than the sum of its proper divisors (728058211).

10122000000221 is an equidigital number, since it uses as much as digits as its factorization.

10122000000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728058210.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10122000000221 its reverse (12200000022101), we get a palindrome (22322000022322).

The spelling of 10122000000221 in words is "ten trillion, one hundred twenty-two billion, two hundred twenty-one", and thus it is an aban number.