101222021212121 has 2 divisors, whose sum is σ = 101222021212122. Its totient is φ = 101222021212120.

The previous prime is 101222021212111. The next prime is 101222021212157. The reversal of 101222021212121 is 121212120222101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79039852270096 + 22182168942025 = 8890436^2 + 4709795^2 .

It is a cyclic number.

It is not a de Polignac number, because 101222021212121 - 2²² = 101222017017817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101222021212093 and 101222021212102.

It is not a weakly prime, because it can be changed into another prime (101222021212111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611010606060 + 50611010606061.

It is an arithmetic number, because the mean of its divisors is an integer number (50611010606061).

Almost surely, 2^{101222021212121} is an apocalyptic number.

It is an amenable number.

101222021212121 is a deficient number, since it is larger than the sum of its proper divisors (1).

101222021212121 is an equidigital number, since it uses as much as digits as its factorization.

101222021212121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 101222021212121 its reverse (121212120222101), we get a palindrome (222434141434222).

The spelling of 101222021212121 in words is "one hundred one trillion, two hundred twenty-two billion, twenty-one million, two hundred twelve thousand, one hundred twenty-one".