1021220212219 has 2 divisors, whose sum is σ = 1021220212220. Its totient is φ = 1021220212218.

The previous prime is 1021220212189. The next prime is 1021220212273. The reversal of 1021220212219 is 9122120221201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021220212219 - 2¹³ = 1021220204027 is a prime.

It is a super-2 number, since 2×1021220212219² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021220212193 and 1021220212202.

It is not a weakly prime, because it can be changed into another prime (1021220212279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510610106109 + 510610106110.

It is an arithmetic number, because the mean of its divisors is an integer number (510610106110).

Almost surely, 2^{1021220212219} is an apocalyptic number.

1021220212219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021220212219 is an equidigital number, since it uses as much as digits as its factorization.

1021220212219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 1021220212219 in words is "one trillion, twenty-one billion, two hundred twenty million, two hundred twelve thousand, two hundred nineteen".