21022201033 has 2 divisors, whose sum is σ = 21022201034. Its totient is φ = 21022201032.

The previous prime is 21022200973. The next prime is 21022201111. The reversal of 21022201033 is 33010222012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18942567424 + 2079633609 = 137632^2 + 45603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022201033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21022200998 and 21022201016.

It is not a weakly prime, because it can be changed into another prime (21022231033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511100516 + 10511100517.

It is an arithmetic number, because the mean of its divisors is an integer number (10511100517).

Almost surely, 2^21022201033 is an apocalyptic number.

It is an amenable number.

21022201033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022201033 is an equidigital number, since it uses as much as digits as its factorization.

21022201033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21022201033 its reverse (33010222012), we get a palindrome (54032423045).

The spelling of 21022201033 in words is "twenty-one billion, twenty-two million, two hundred one thousand, thirty-three".