2211230233021 has 2 divisors, whose sum is σ = 2211230233022. Its totient is φ = 2211230233020.

The previous prime is 2211230233007. The next prime is 2211230233061. The reversal of 2211230233021 is 1203320321122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1118496608100 + 1092733624921 = 1057590^2 + 1045339^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211230233021 - 2¹³ = 2211230224829 is a prime.

It is a super-2 number, since 2×2211230233021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2211230232983 and 2211230233001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211230233061) 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, 1105615116510 + 1105615116511.

It is an arithmetic number, because the mean of its divisors is an integer number (1105615116511).

Almost surely, 2^{2211230233021} is an apocalyptic number.

It is an amenable number.

2211230233021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211230233021 is an equidigital number, since it uses as much as digits as its factorization.

2211230233021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2211230233021 its reverse (1203320321122), we get a palindrome (3414550554143).

The spelling of 2211230233021 in words is "two trillion, two hundred eleven billion, two hundred thirty million, two hundred thirty-three thousand, twenty-one".