10211220019997 has 2 divisors, whose sum is σ = 10211220019998. Its totient is φ = 10211220019996.

The previous prime is 10211220019969. The next prime is 10211220020003. The reversal of 10211220019997 is 79991002211201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7976212959961 + 2235007060036 = 2824219^2 + 1494994^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211220019997 - 2¹⁴ = 10211220003613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211220019597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105610009998 + 5105610009999.

It is an arithmetic number, because the mean of its divisors is an integer number (5105610009999).

Almost surely, 2^{10211220019997} is an apocalyptic number.

It is an amenable number.

10211220019997 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211220019997 is an equidigital number, since it uses as much as digits as its factorization.

10211220019997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 44.

The spelling of 10211220019997 in words is "ten trillion, two hundred eleven billion, two hundred twenty million, nineteen thousand, nine hundred ninety-seven".