21122030310001 has 4 divisors (see below), whose sum is σ = 21122137208052. Its totient is φ = 21121923411952.

The previous prime is 21122030309911. The next prime is 21122030310013. The reversal of 21122030310001 is 10001303022112.

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 3824117136225 + 17297913173776 = 1955535^2 + 4159076^2 .

It is a cyclic number.

It is not a de Polignac number, because 21122030310001 - 2¹¹ = 21122030307953 is a prime.

It is a super-2 number, since 2×21122030310001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122030311001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53152090 + ... + 53548003.

It is an arithmetic number, because the mean of its divisors is an integer number (5280534302013).

Almost surely, 2^{21122030310001} is an apocalyptic number.

It is an amenable number.

21122030310001 is a deficient number, since it is larger than the sum of its proper divisors (106898051).

21122030310001 is a wasteful number, since it uses less digits than its factorization.

21122030310001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106898050.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21122030310001 its reverse (10001303022112), we get a palindrome (31123333332113).

The spelling of 21122030310001 in words is "twenty-one trillion, one hundred twenty-two billion, thirty million, three hundred ten thousand, one".