1222011021021 has 32 divisors (see below), whose sum is σ = 1928474342400. Its totient is φ = 687869704368.

The previous prime is 1222011021019. The next prime is 1222011021047. The reversal of 1222011021021 is 1201201102221.

It is not a de Polignac number, because 1222011021021 - 2¹ = 1222011021019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222011021061) 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 in 31 ways as a sum of consecutive naturals, for example, 8793531 + ... + 8931416.

It is an arithmetic number, because the mean of its divisors is an integer number (60264823200).

Almost surely, 2^{1222011021021} is an apocalyptic number.

It is an amenable number.

1222011021021 is a deficient number, since it is larger than the sum of its proper divisors (706463321379).

1222011021021 is an equidigital number, since it uses as much as digits as its factorization.

1222011021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17725038 (or 17725024 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1222011021021 its reverse (1201201102221), we get a palindrome (2423212123242).

The spelling of 1222011021021 in words is "one trillion, two hundred twenty-two billion, eleven million, twenty-one thousand, twenty-one".