1022221001021 has 8 divisors (see below), whose sum is σ = 1119390300864. Its totient is φ = 925758387520.

The previous prime is 1022221000991. The next prime is 1022221001029. The reversal of 1022221001021 is 1201001222201.

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 1022221001021 - 2²⁶ = 1022153892157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022221000987 and 1022221001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022221001029) 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 7 ways as a sum of consecutive naturals, for example, 176668556 + ... + 176674341.

It is an arithmetic number, because the mean of its divisors is an integer number (139923787608).

Almost surely, 2^{1022221001021} is an apocalyptic number.

1022221001021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1022221001021 is a deficient number, since it is larger than the sum of its proper divisors (97169299843).

1022221001021 is a wasteful number, since it uses less digits than its factorization.

1022221001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353343171.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1022221001021 its reverse (1201001222201), we get a palindrome (2223222223222).

The spelling of 1022221001021 in words is "one trillion, twenty-two billion, two hundred twenty-one million, one thousand, twenty-one".