10001022212021 has 2 divisors, whose sum is σ = 10001022212022. Its totient is φ = 10001022212020.

The previous prime is 10001022211991. The next prime is 10001022212053. The reversal of 10001022212021 is 12021222010001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9977701562500 + 23320649521 = 3158750^2 + 152711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001022212021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10001022211987 and 10001022212005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001022212081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000511106010 + 5000511106011.

It is an arithmetic number, because the mean of its divisors is an integer number (5000511106011).

Almost surely, 2^{10001022212021} is an apocalyptic number.

It is an amenable number.

10001022212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001022212021 is an equidigital number, since it uses as much as digits as its factorization.

10001022212021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10001022212021 its reverse (12021222010001), we get a palindrome (22022244222022).

It can be divided in two parts, 1000102 and 2212021, that added together give a palindrome (3212123).

The spelling of 10001022212021 in words is "ten trillion, one billion, twenty-two million, two hundred twelve thousand, twenty-one".