3421220011021 has 2 divisors, whose sum is σ = 3421220011022. Its totient is φ = 3421220011020.

The previous prime is 3421220011003. The next prime is 3421220011049. The reversal of 3421220011021 is 1201100221243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2174902310025 + 1246317700996 = 1474755^2 + 1116386^2 .

It is a cyclic number.

It is not a de Polignac number, because 3421220011021 - 2³⁷ = 3283781057549 is a prime.

It is a super-2 number, since 2×3421220011021² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3421220011021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3421220011421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710610005510 + 1710610005511.

It is an arithmetic number, because the mean of its divisors is an integer number (1710610005511).

Almost surely, 2^{3421220011021} is an apocalyptic number.

It is an amenable number.

3421220011021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3421220011021 is an equidigital number, since it uses as much as digits as its factorization.

3421220011021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 3421220011021 its reverse (1201100221243), we get a palindrome (4622320232264).

The spelling of 3421220011021 in words is "three trillion, four hundred twenty-one billion, two hundred twenty million, eleven thousand, twenty-one".