10120021222121 has 4 divisors (see below), whose sum is σ = 10355370552912. Its totient is φ = 9884671891332.

The previous prime is 10120021222117. The next prime is 10120021222127. The reversal of 10120021222121 is 12122212002101.

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 10120021222121 - 2² = 10120021222117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10120021222121.

It is not an unprimeable number, because it can be changed into a prime (10120021222127) 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, 117674665331 + ... + 117674665416.

It is an arithmetic number, because the mean of its divisors is an integer number (2588842638228).

Almost surely, 2^{10120021222121} is an apocalyptic number.

It is an amenable number.

10120021222121 is a deficient number, since it is larger than the sum of its proper divisors (235349330791).

10120021222121 is an equidigital number, since it uses as much as digits as its factorization.

10120021222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235349330790.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10120021222121 its reverse (12122212002101), we get a palindrome (22242233224222).

The spelling of 10120021222121 in words is "ten trillion, one hundred twenty billion, twenty-one million, two hundred twenty-two thousand, one hundred twenty-one".