10101222100121 has 4 divisors (see below), whose sum is σ = 10129837460532. Its totient is φ = 10072606739712.

The previous prime is 10101222100103. The next prime is 10101222100201. The reversal of 10101222100121 is 12100122210101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1310026750096 + 8791195350025 = 1144564^2 + 2964995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10101222100121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10101222100096 and 10101222100105.

It is not an unprimeable number, because it can be changed into a prime (10101222100621) 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, 14307679676 + ... + 14307680381.

It is an arithmetic number, because the mean of its divisors is an integer number (2532459365133).

Almost surely, 2^{10101222100121} is an apocalyptic number.

It is an amenable number.

10101222100121 is a deficient number, since it is larger than the sum of its proper divisors (28615360411).

10101222100121 is an equidigital number, since it uses as much as digits as its factorization.

10101222100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28615360410.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10101222100121 its reverse (12100122210101), we get a palindrome (22201344310222).

The spelling of 10101222100121 in words is "ten trillion, one hundred one billion, two hundred twenty-two million, one hundred thousand, one hundred twenty-one".