1022202221021 has 32 divisors (see below), whose sum is σ = 1169255865600. Its totient is φ = 887809950720.

The previous prime is 1022202220993. The next prime is 1022202221063. The reversal of 1022202221021 is 1201222022201.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1022202221021 is a prime.

It is a super-4 number, since 4×1022202221021⁴ (a number of 49 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a zygodrome in base 16.

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 31 ways as a sum of consecutive naturals, for example, 14603735 + ... + 14673563.

It is an arithmetic number, because the mean of its divisors is an integer number (36539245800).

Almost surely, 2^{1022202221021} is an apocalyptic number.

It is an amenable number.

1022202221021 is a deficient number, since it is larger than the sum of its proper divisors (147053644579).

1022202221021 is a wasteful number, since it uses less digits than its factorization.

1022202221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71189.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1022202221021 its reverse (1201222022201), we get a palindrome (2223424243222).

The spelling of 1022202221021 in words is "one trillion, twenty-two billion, two hundred two million, two hundred twenty-one thousand, twenty-one".