1022202221221 has 16 divisors (see below), whose sum is σ = 1035672422400. Its totient is φ = 1008822774960.

The previous prime is 1022202221177. The next prime is 1022202221303. The reversal of 1022202221221 is 1221222022201.

It is a cyclic number.

It is not a de Polignac number, because 1022202221221 - 2¹⁷ = 1022202090149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022202221921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63157096 + ... + 63173278.

It is an arithmetic number, because the mean of its divisors is an integer number (64729526400).

Almost surely, 2^{1022202221221} is an apocalyptic number.

It is an amenable number.

1022202221221 is a deficient number, since it is larger than the sum of its proper divisors (13470201179).

1022202221221 is a wasteful number, since it uses less digits than its factorization.

1022202221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18936.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1022202221221 its reverse (1221222022201), we get a palindrome (2243424243422).

The spelling of 1022202221221 in words is "one trillion, twenty-two billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-one".