10221002119921 has 2 divisors, whose sum is σ = 10221002119922. Its totient is φ = 10221002119920.

The previous prime is 10221002119903. The next prime is 10221002120027. The reversal of 10221002119921 is 12991120012201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6229941120225 + 3991060999696 = 2495985^2 + 1997764^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221002119921 - 2¹⁹ = 10221001595633 is a prime.

It is a super-3 number, since 3×10221002119921³ (a number of 40 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (10221002119121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110501059960 + 5110501059961.

It is an arithmetic number, because the mean of its divisors is an integer number (5110501059961).

Almost surely, 2^{10221002119921} is an apocalyptic number.

It is an amenable number.

10221002119921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221002119921 is an equidigital number, since it uses as much as digits as its factorization.

10221002119921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 10221002119921 in words is "ten trillion, two hundred twenty-one billion, two million, one hundred nineteen thousand, nine hundred twenty-one".