1022121221021 has 8 divisors (see below), whose sum is σ = 1075000287744. Its totient is φ = 970486367760.

The previous prime is 1022121220999. The next prime is 1022121221111. The reversal of 1022121221021 is 1201221212201.

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

It is a cyclic number.

It is not a de Polignac number, because 1022121221021 - 2¹⁸ = 1022120958877 is a prime.

It is a super-2 number, since 2×1022121221021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022121221221) 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, 311051681 + ... + 311054966.

It is an arithmetic number, because the mean of its divisors is an integer number (134375035968).

Almost surely, 2^{1022121221021} is an apocalyptic number.

It is an amenable number.

1022121221021 is a deficient number, since it is larger than the sum of its proper divisors (52879066723).

1022121221021 is an equidigital number, since it uses as much as digits as its factorization.

1022121221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622106731.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1022121221021 its reverse (1201221212201), we get a palindrome (2223342433222).

The spelling of 1022121221021 in words is "one trillion, twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, twenty-one".