1022221102021 has 8 divisors (see below), whose sum is σ = 1169424464000. Its totient is φ = 875310684048.

The previous prime is 1022221102009. The next prime is 1022221102031. The reversal of 1022221102021 is 1202011222201.

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 1022221102021 - 2¹⁵ = 1022221069253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022221101986 and 1022221102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022221102031) 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, 73228521 + ... + 73242478.

It is an arithmetic number, because the mean of its divisors is an integer number (146178058000).

Almost surely, 2^{1022221102021} is an apocalyptic number.

It is an amenable number.

1022221102021 is a deficient number, since it is larger than the sum of its proper divisors (147203361979).

1022221102021 is an equidigital number, since it uses as much as digits as its factorization.

1022221102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146472003.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1022221102021 its reverse (1202011222201), we get a palindrome (2224232324222).

The spelling of 1022221102021 in words is "one trillion, twenty-two billion, two hundred twenty-one million, one hundred two thousand, twenty-one".