101122222021 has 2 divisors, whose sum is σ = 101122222022. Its totient is φ = 101122222020.

The previous prime is 101122221989. The next prime is 101122222031. The reversal of 101122222021 is 120222221101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101114460225 + 7761796 = 317985^2 + 2786^2 .

It is a cyclic number.

It is not a de Polignac number, because 101122222021 - 2⁵ = 101122221989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101122221986 and 101122222004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101122222031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50561111010 + 50561111011.

It is an arithmetic number, because the mean of its divisors is an integer number (50561111011).

Almost surely, 2^101122222021 is an apocalyptic number.

It is an amenable number.

101122222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101122222021 is an equidigital number, since it uses as much as digits as its factorization.

101122222021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 101122222021 its reverse (120222221101), we get a palindrome (221344443122).

The spelling of 101122222021 in words is "one hundred one billion, one hundred twenty-two million, two hundred twenty-two thousand, twenty-one".