22021000002101 has 2 divisors, whose sum is σ = 22021000002102. Its totient is φ = 22021000002100.

The previous prime is 22021000002041. The next prime is 22021000002119. The reversal of 22021000002101 is 10120000012022.

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., 11829135301201 + 10191864700900 = 3439351^2 + 3192470^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021000002101 - 2⁴² = 17622953490997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021000002121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010500001050 + 11010500001051.

It is an arithmetic number, because the mean of its divisors is an integer number (11010500001051).

Almost surely, 2^{22021000002101} is an apocalyptic number.

It is an amenable number.

22021000002101 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021000002101 is an equidigital number, since it uses as much as digits as its factorization.

22021000002101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22021000002101 its reverse (10120000012022), we get a palindrome (32141000014123).

The spelling of 22021000002101 in words is "twenty-two trillion, twenty-one billion, two thousand, one hundred one".