10122101221021 has 4 divisors (see below), whose sum is σ = 10126100473344. Its totient is φ = 10118101968700.

The previous prime is 10122101221007. The next prime is 10122101221069. The reversal of 10122101221021 is 12012210122101.

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 10122101221021 - 2¹⁹ = 10122100696733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10122101220986 and 10122101221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122101261021) 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, 1999622365 + ... + 1999627426.

It is an arithmetic number, because the mean of its divisors is an integer number (2531525118336).

Almost surely, 2^{10122101221021} is an apocalyptic number.

It is an amenable number.

10122101221021 is a deficient number, since it is larger than the sum of its proper divisors (3999252323).

10122101221021 is an equidigital number, since it uses as much as digits as its factorization.

10122101221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999252322.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10122101221021 its reverse (12012210122101), we get a palindrome (22134311343122).

The spelling of 10122101221021 in words is "ten trillion, one hundred twenty-two billion, one hundred one million, two hundred twenty-one thousand, twenty-one".