1222001121021 has 8 divisors (see below), whose sum is σ = 1631829983520. Its totient is φ = 813419836272.

The previous prime is 1222001121007. The next prime is 1222001121023. The reversal of 1222001121021 is 1201211002221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222001121021 - 2⁶ = 1222001120957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222001121023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311892151 + ... + 311896068.

It is an arithmetic number, because the mean of its divisors is an integer number (203978747940).

Almost surely, 2^{1222001121021} is an apocalyptic number.

It is an amenable number.

1222001121021 is a deficient number, since it is larger than the sum of its proper divisors (409828862499).

1222001121021 is an equidigital number, since it uses as much as digits as its factorization.

1222001121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623788875.

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

Adding to 1222001121021 its reverse (1201211002221), we get a palindrome (2423212123242).

The spelling of 1222001121021 in words is "one trillion, two hundred twenty-two billion, one million, one hundred twenty-one thousand, twenty-one".