10120111222021 has 2 divisors, whose sum is σ = 10120111222022. Its totient is φ = 10120111222020.

The previous prime is 10120111222009. The next prime is 10120111222031. The reversal of 10120111222021 is 12022211102101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9183996921121 + 936114300900 = 3030511^2 + 967530^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120111222021 - 2²³ = 10120102833413 is a prime.

It is a super-2 number, since 2×10120111222021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10120111221986 and 10120111222004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120111222031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060055611010 + 5060055611011.

It is an arithmetic number, because the mean of its divisors is an integer number (5060055611011).

Almost surely, 2^{10120111222021} is an apocalyptic number.

It is an amenable number.

10120111222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120111222021 is an equidigital number, since it uses as much as digits as its factorization.

10120111222021 is an evil number, because the sum of its binary digits is even.

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

Adding to 10120111222021 its reverse (12022211102101), we get a palindrome (22142322324122).

The spelling of 10120111222021 in words is "ten trillion, one hundred twenty billion, one hundred eleven million, two hundred twenty-two thousand, twenty-one".