910021220201 has 2 divisors, whose sum is σ = 910021220202. Its totient is φ = 910021220200.

The previous prime is 910021220089. The next prime is 910021220237. The reversal of 910021220201 is 102022120019.

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., 897142374976 + 12878845225 = 947176^2 + 113485^2 .

It is a cyclic number.

It is not a de Polignac number, because 910021220201 - 2¹⁸ = 910020958057 is a prime.

It is a super-2 number, since 2×910021220201² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (910021223201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455010610100 + 455010610101.

It is an arithmetic number, because the mean of its divisors is an integer number (455010610101).

Almost surely, 2^910021220201 is an apocalyptic number.

It is an amenable number.

910021220201 is a deficient number, since it is larger than the sum of its proper divisors (1).

910021220201 is an equidigital number, since it uses as much as digits as its factorization.

910021220201 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 20.

The spelling of 910021220201 in words is "nine hundred ten billion, twenty-one million, two hundred twenty thousand, two hundred one".