101021222021 has 2 divisors, whose sum is σ = 101021222022. Its totient is φ = 101021222020.

The previous prime is 101021222017. The next prime is 101021222033. The reversal of 101021222021 is 120222120101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101012730625 + 8491396 = 317825^2 + 2914^2 .

It is a cyclic number.

It is not a de Polignac number, because 101021222021 - 2² = 101021222017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101021221987 and 101021222005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101021222321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510611010 + 50510611011.

It is an arithmetic number, because the mean of its divisors is an integer number (50510611011).

Almost surely, 2^101021222021 is an apocalyptic number.

It is an amenable number.

101021222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101021222021 is an equidigital number, since it uses as much as digits as its factorization.

101021222021 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 14.

Adding to 101021222021 its reverse (120222120101), we get a palindrome (221243342122).

The spelling of 101021222021 in words is "one hundred one billion, twenty-one million, two hundred twenty-two thousand, twenty-one".