1022110212421 has 2 divisors, whose sum is σ = 1022110212422. Its totient is φ = 1022110212420.

The previous prime is 1022110212217. The next prime is 1022110212433. The reversal of 1022110212421 is 1242120112201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 584481656196 + 437628556225 = 764514^2 + 661535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022110212421 - 2³¹ = 1019962728773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022110212521) 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, 511055106210 + 511055106211.

It is an arithmetic number, because the mean of its divisors is an integer number (511055106211).

Almost surely, 2^{1022110212421} is an apocalyptic number.

It is an amenable number.

1022110212421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022110212421 is an equidigital number, since it uses as much as digits as its factorization.

1022110212421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1022110212421 its reverse (1242120112201), we get a palindrome (2264230324622).

The spelling of 1022110212421 in words is "one trillion, twenty-two billion, one hundred ten million, two hundred twelve thousand, four hundred twenty-one".