1222001020021 has 8 divisors (see below), whose sum is σ = 1286541036000. Its totient is φ = 1157483421360.

The previous prime is 1222001020001. The next prime is 1222001020049. The reversal of 1222001020021 is 1200201002221.

It is a happy number.

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 1222001020021 - 2⁵ = 1222001019989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222001019983 and 1222001020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222001020001) 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, 5492371 + ... + 5710528.

It is an arithmetic number, because the mean of its divisors is an integer number (160817629500).

Almost surely, 2^{1222001020021} is an apocalyptic number.

It is an amenable number.

1222001020021 is a deficient number, since it is larger than the sum of its proper divisors (64540015979).

1222001020021 is a wasteful number, since it uses less digits than its factorization.

1222001020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11208659.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1222001020021 its reverse (1200201002221), we get a palindrome (2422202022242).

The spelling of 1222001020021 in words is "one trillion, two hundred twenty-two billion, one million, twenty thousand, twenty-one".