2212040022421 has 2 divisors, whose sum is σ = 2212040022422. Its totient is φ = 2212040022420.

The previous prime is 2212040022391. The next prime is 2212040022433. The reversal of 2212040022421 is 1242200402122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1526803738321 + 685236284100 = 1235639^2 + 827790^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212040022421 - 2¹⁷ = 2212039891349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212040022392 and 2212040022401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212040022481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106020011210 + 1106020011211.

It is an arithmetic number, because the mean of its divisors is an integer number (1106020011211).

Almost surely, 2^{2212040022421} is an apocalyptic number.

It is an amenable number.

2212040022421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212040022421 is an equidigital number, since it uses as much as digits as its factorization.

2212040022421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 2212040022421 its reverse (1242200402122), we get a palindrome (3454240424543).

The spelling of 2212040022421 in words is "two trillion, two hundred twelve billion, forty million, twenty-two thousand, four hundred twenty-one".