22121202073 has 2 divisors, whose sum is σ = 22121202074. Its totient is φ = 22121202072.

The previous prime is 22121201989. The next prime is 22121202079. The reversal of 22121202073 is 37020212122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21761265289 + 359936784 = 147517^2 + 18972^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121202073 - 2²¹ = 22119104921 is a prime.

It is not a weakly prime, because it can be changed into another prime (22121202079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060601036 + 11060601037.

It is an arithmetic number, because the mean of its divisors is an integer number (11060601037).

Almost surely, 2^22121202073 is an apocalyptic number.

It is an amenable number.

22121202073 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121202073 is an equidigital number, since it uses as much as digits as its factorization.

22121202073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 22121202073 its reverse (37020212122), we get a palindrome (59141414195).

The spelling of 22121202073 in words is "twenty-two billion, one hundred twenty-one million, two hundred two thousand, seventy-three".